feat(ci): Initialize CI/CD workflow for Android build and tests.

feat(ci): Add ISSUE_TEMPLATE for github issue.

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -0,0 +1,38 @@
+name: Bug Report
+description: File a bug report
+title: "[Bug]: "
+labels: ["bug", "triage me"]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Thanks for taking the time to fill out this bug report!
+  - type: checkboxes
+    attributes:
+      label: Is there an existing issue for this?
+      description: Please search to see if an issue already exists for the bug you encountered.
+      options:
+      - label: I have searched the existing issues
+        required: true
+  - type: checkboxes
+    attributes:
+      label: Is there a StackOverflow question about this issue?
+      description: Please search [StackOverflow](https://stackoverflow.com/questions/tagged/android-jetpack) if an issue with an answer already exists for the bug you encountered.
+      options:
+      - label: I have searched StackOverflow
+        required: true
+  - type: textarea
+    id: what-happened
+    attributes:
+      label: What happened?
+      description: Also tell us, what did you expect to happen?
+      placeholder: Tell us what you see!
+      value: "A bug happened!"
+    validations:
+      required: true
+  - type: textarea
+    id: logs
+    attributes:
+      label: Relevant logcat output
+      description: Please copy and paste any relevant logcat output. This will be automatically formatted into code, so no need for backticks.
+      render: shell

.github/ISSUE_TEMPLATE/docs_issue.yml

@@ -0,0 +1,30 @@
+name: Documentation issue
+description: File an issue or make a suggestion for the project documentation
+title: "[Documentation]: "
+labels: ["documentation"]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Thanks for taking the time to improve our documentation!
+  - type: checkboxes
+    attributes:
+      label: Is there an existing issue for this?
+      description: Please search to see if an issue already exists for the documentation issue you encountered.
+      options:
+      - label: I have searched the existing issues
+        required: true
+  - type: input
+    id: page-url
+    attributes:
+      label: Page URL (type "NEW" for a new page suggestion)
+    validations:
+      required: true
+  - type: textarea
+    id: what-needs-improving
+    attributes:
+      label: What's the documentation problem or suggestion?
+      placeholder: Tell us what should be improved!
+      value: "Docs need improving!"
+    validations:
+      required: true

.github/ISSUE_TEMPLATE/feature_request.yml

@@ -0,0 +1,39 @@
+name: Feature request
+description: File a feature request
+title: "[FR]: "
+labels: ["enhancement", "triage me"]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Thanks for taking the time to propose a new feature!
+  - type: checkboxes
+    attributes:
+      label: Is there an existing issue for this?
+      description: Please search to see if an issue already exists for this feature request.
+      options:
+      - label: I have searched the existing issues
+        required: true
+  - type: textarea
+    id: describe-problem
+    attributes:
+      label: Describe the problem
+      description: Is your feature request related to a problem? Please describe.
+      placeholder: I'm always frustrated when...
+    validations:
+      required: true
+  - type: textarea
+    id: solution
+    attributes:
+      label: Describe the solution
+      description: Please describe the solution you'd like. A clear and concise description of what you want to happen.
+    validations:
+      required: true
+  - type: textarea
+    id: context
+    attributes:
+      label: Additional context
+      description: Add any other context or screenshots about the feature request here.
+    validations:
+      required: false
+

.github/ISSUE_TEMPLATE/setup_improvement.yml

@@ -0,0 +1,46 @@
+name: Project Setup Improvement
+description: Submit an improvement or suggestion related to project setup
+title: "[Setup Improvement]: "
+labels: ["setup improvement", "triage me"]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Thanks for taking the time to propose an improvement to our project setup!
+
+  - type: checkboxes
+    attributes:
+      label: Preliminary Checks
+      description: Please make sure you've conducted the following checks before submitting an improvement.
+      options:
+        - label: I have searched the existing issues to ensure this is not a duplicate request.
+          required: true
+        - label: This setup improvement does not introduce breaking changes to the existing project structure.
+          required: true
+        - label: I have consulted the project's documentation and guidelines before suggesting this improvement.
+          required: false
+
+  - type: textarea
+    id: describe-problem
+    attributes:
+      label: Describe the Problem or Limitation
+      description: Is your improvement related to a problem or limitation in the current setup? Please describe.
+      placeholder: Every time I try to..., I am hindered by...
+    validations:
+      required: true
+
+  - type: textarea
+    id: solution
+    attributes:
+      label: Proposed Solution
+      description: Please describe the solution or change you'd like to see implemented. Be as detailed as possible.
+    validations:
+      required: true
+
+  - type: textarea
+    id: context
+    attributes:
+      label: Additional Context or References
+      description: Provide any further context, references, or screenshots that might help in understanding the proposed improvement.
+    validations:
+      required: false

.github/ci-gradle.properties

@@ -0,0 +1,21 @@
+# Disables the use of the Gradle daemon, which is a background process for speeding up Gradle commands.
+# With this set to false, a new Gradle process will be started for each build.
+org.gradle.daemon=false
+
+# Enables the parallel execution of tasks that do not depend on each other. This can speed up the overall build process.
+org.gradle.parallel=true
+
+# Sets the maximum number of worker processes that Gradle can use for executing tasks (e.g., compilation).
+# Here, it is limited to 2 worker processes.
+org.gradle.workers.max=2
+
+# Disables the incremental compilation feature of Kotlin. With incremental compilation, only the changed source files get recompiled.
+kotlin.incremental=false
+
+# Determines how the Kotlin compiler runs. 'in-process' means the compiler runs inside the Gradle process, not as a separate process.
+kotlin.compiler.execution.strategy=in-process
+
+# Controls whether warnings in Kotlin code should be treated as errors during the compilation process.
+# This setting is useful for CI environments where you might not want a build to fail just because of warnings.
+# Set to true if you want to treat warnings as errors in your local setup.
+warningsAsErrors=false

.github/pull_request_template.md

@@ -0,0 +1,18 @@
+---
+name: Pull request
+about: Create a pull request
+label: 'triage me'
+---
+Thank you for opening a Pull Request!
+Before submitting your PR, please make sure you:
+
+- [ ] Include a PR description which states **what you've done and why**
+- [ ] Open a GitHub issue as a bug/feature request before writing your code! That way we can discuss the change, evaluate designs, and agree on the general idea
+- [ ] Ensure the tests and linter pass (`./gradlew --init-script gradle/init.gradle.kts spotlessApply` to automatically apply formatting)
+- [ ] Update any relevant documentation
+
+Are you a first-time contributor?
+- [ ] Ensure you've read and understood the contributing guidelines
+- [ ] Familiarize yourself with the project structure and the codebase
+
+Fixes #<issue_number_goes_here> 🦕

.github/workflows/Build.yml

@@ -0,0 +1,172 @@
+name: Android CI
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+
+concurrency:
+  group: build-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    timeout-minutes: 90
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Validate Gradle Wrapper
+        uses: gradle/wrapper-validation-action@v1
+
+      - name: Copy CI gradle.properties
+        run: mkdir -p ~/.gradle ; cp .github/ci-gradle.properties ~/.gradle/gradle.properties
+
+      - name: Set up JDK 17
+        uses: actions/setup-java@v3
+        with:
+          distribution: 'zulu'
+          java-version: 17
+
+      - name: Setup Gradle
+        uses: gradle/gradle-build-action@v2
+
+        # If the test fails, execute the following command to apply fixes.
+        # ./gradlew spotlessApply --init-script gradle/init.gradle.kts --no-configuration-cache
+      - name: Check spotless
+        run: ./gradlew spotlessCheck --init-script gradle/init.gradle.kts --no-configuration-cache
+
+      - name: Build all build type and flavor permutations
+        run: ./gradlew assemble
+
+      - name: Upload build outputs (APKs)
+        uses: actions/upload-artifact@v3
+        with:
+          name: APKs
+          path: '**/build/outputs/apk/**/*.apk'
+
+      - name: Run local tests
+        run: ./gradlew testDemoDebug testProdDebug
+
+  test:
+    runs-on: ubuntu-latest
+
+    permissions:
+      contents: write
+
+    timeout-minutes: 60
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Validate Gradle Wrapper
+        uses: gradle/wrapper-validation-action@v1
+
+      - name: Copy CI gradle.properties
+        run: mkdir -p ~/.gradle ; cp .github/ci-gradle.properties ~/.gradle/gradle.properties
+
+      - name: Set up JDK 17
+        uses: actions/setup-java@v3
+        with:
+          distribution: 'zulu'
+          java-version: 17
+
+      - name: Setup Gradle
+        uses: gradle/gradle-build-action@v2
+
+      - name: Run all local screenshot tests (Roborazzi)
+        id: screenshotsverify
+        continue-on-error: true
+        run: ./gradlew verifyRoborazziDemoDebug
+
+      - name: Prevent pushing new screenshots if this is a fork
+        id: checkfork
+        continue-on-error: false
+        if: steps.screenshotsverify.outcome == 'failure' && github.event.pull_request.head.repo.full_name != github.repository
+        run: |
+          echo "::error::Screenshot tests failed, please create a PR in your fork first." && exit 1
+
+      # Runs if previous job failed
+      - name: Generate new screenshots if verification failed and it's a PR
+        id: screenshotsrecord
+        if: steps.screenshotsverify.outcome == 'failure' && github.event_name == 'pull_request'
+        run: |
+          ./gradlew recordRoborazziDemoDebug
+
+      - name: Push new screenshots if available
+        uses: stefanzweifel/git-auto-commit-action@v4
+        if: steps.screenshotsrecord.outcome == 'success'
+        with:
+          file_pattern: '*/*.png'
+          disable_globbing: true
+          commit_message: "🤖 Updates screenshots"
+
+      # Run local tests after screenshot tests to avoid wrong UP-TO-DATE. TODO: Ignore screenshots.
+      - name: Run local tests
+        if: always()
+        run: ./gradlew testDemoDebug testProdDebug
+
+      - name: Upload test results (XML)
+        if: always()
+        uses: actions/upload-artifact@v3
+        with:
+          name: test-results
+          path: '**/build/test-results/test*UnitTest/**.xml'
+
+      - name: Check lint
+        run: ./gradlew :app:lintProdRelease
+
+      - name: Upload lint reports (HTML)
+        if: always()
+        uses: actions/upload-artifact@v3
+        with:
+          name: lint-reports
+          path: '**/build/reports/lint-results-*.html'
+
+  androidTest:
+    needs: build
+    runs-on: macOS-latest # enables hardware acceleration in the virtual machine
+    timeout-minutes: 55
+    strategy:
+      matrix:
+        api-level: [26, 30]
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Copy CI gradle.properties
+        run: mkdir -p ~/.gradle ; cp .github/ci-gradle.properties ~/.gradle/gradle.properties
+
+      - name: Set up JDK 17
+        uses: actions/setup-java@v3
+        with:
+          distribution: 'zulu'
+          java-version: 17
+
+      - name: Setup Gradle
+        uses: gradle/gradle-build-action@v2
+
+      - name: Build AndroidTest apps
+        run: ./gradlew packageDemoDebug packageDemoDebugAndroidTest --daemon
+
+      - name: Run instrumentation tests
+        uses: reactivecircus/android-emulator-runner@v2
+        with:
+          api-level: ${{ matrix.api-level }}
+          arch: x86_64
+          disable-animations: true
+          disk-size: 6000M
+          heap-size: 600M
+          script: ./gradlew connectedDemoDebugAndroidTest --daemon
+
+      - name: Upload test reports
+        if: always()
+        uses: actions/upload-artifact@v3
+        with:
+          name: test-reports-${{ matrix.api-level }}
+          path: '**/build/reports/androidTests'