chore: add github CI configs

.github/ISSUE_TEMPLATE/bug_report.md

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+---
+name: Bug report
+about: Create a report to help us improve
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+**Describe the bug**
+A clear and concise description of what the bug is.
+
+**To Reproduce**
+Steps to reproduce the behavior:
+1. Provide configs
+2. Run command
+3. See error
+
+**Expected behavior**
+A clear and concise description of what you expected to happen.
+
+**Screenshots**
+If applicable, add screenshots to help explain your problem.
+
+**Context (please complete the following information):**
+ - Gem version
+ - Ruby version
+ - Rails version
+ - Gruf version
+ - Faraday version
+
+**Additional context**
+Add any other context about the problem here.

.github/PULL_REQUEST_TEMPLATE.md

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+# Context
+
+<!--
+Short description about the feature and the motivation/issue behind it
+-->
+-
+
+## Related tickets
+
+-
+
+# What's inside
+
+<!--
+List of features and changes (or highlights) (from the code perspective)
+The purpose of this list is to track the progress if it's WIP (use checkboxes)
+and to emphasize the critical parts (which you'd like to pay reviewers attention to)
+-->
+- [x] A
+
+# Checklist:
+
+- [ ] I have added tests
+- [ ] I have made corresponding changes to the documentation

.github/workflows/tests.yml

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+name: Ruby
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ '**' ]
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    env:
+      RUBY_VERSION: "3.3"
+    name: Rubocop
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+      - name: Setup Ruby w/ same version as image
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: "3.3"
+      - name: Install dependencies
+        run: |
+          gem install dip
+          dip bundle install
+      - name: Run linter
+        run: dip rubocop
+
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        ruby: [ '2.7', '3.0', '3.1', '3.2', '3.3' ]
+    env:
+      RUBY_VERSION: ${{ matrix.ruby }}
+    name: Ruby ${{ matrix.ruby }}
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+      - name: Setup Ruby w/ same version as image
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: ${{ matrix.ruby }}
+      - name: Install dependencies
+        run: |
+          gem install dip
+          dip provision
+      - name: Run tests
+        run: dip appraisal rspec --format RspecJunitFormatter --out test-results/rspec_${{ matrix.ruby }}.xml --format documentation