chore(codecov): move to .github folder

.github/codecov.yaml

@@ -0,0 +1,53 @@
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+
+
+env:
+  CARGO_TERM_COLOR: always
+
+name: unit
+jobs:
+  test:
+    name: unit-tests
+    runs-on: ubuntu-latest
+    timeout-minutes: 60
+    steps:
+      - name: Checkout sources
+        uses: actions/checkout@v3
+
+      - name: Install toolchain
+        uses: dtolnay/rust-toolchain@stable
+        with:
+          components: llvm-tools-preview
+
+      - name: Install protobuf
+        run: sudo apt-get install -y protobuf-compiler
+
+      - uses: Swatinem/rust-cache@v2
+        with:
+          cache-on-failure: true
+
+      - name: Install Foundry
+        uses: foundry-rs/foundry-toolchain@v1
+
+      - name: Install latest nextest release
+        uses: taiki-e/install-action@nextest
+
+      - name: Install cargo-llvm-cov
+        uses: taiki-e/install-action@cargo-llvm-cov
+
+      - name: Run tests
+        run: |
+          cargo llvm-cov nextest --lcov --output-path lcov.info \
+            --locked --all-features --workspace
+
+      - name: Upload coverage data to codecov
+        uses: codecov/codecov-action@v3
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}
+          files: lcov.info
+          flags: unit-tests
+