chore: Added code coverage CI (#1236)

.github/workflows/coverage.yml

@@ -0,0 +1,55 @@
+name: Coverage
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+env:
+  RUSTFLAGS: "-D warnings"
+
+jobs:
+  coverage:
+    runs-on: ${{ matrix.platform }}
+    name: "${{ matrix.example }} - ${{ matrix.platform }}"
+    strategy:
+      matrix:
+        platform: [macos-latest]
+        toolchain: [stable]
+    steps:
+      - uses: actions/checkout@v3
+      - name: Install Homebrew
+        run: |
+          /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
+      - name: Install LLVM
+        run: brew install llvm
+      - name: Add LLVM to PATH
+        run: echo "/opt/homebrew/opt/llvm/bin" >> $GITHUB_PATH
+      - name: Install cargo-llvm-cov
+        run: brew install cargo-llvm-cov
+      - name: Llvm version
+        run: llvm-config --version
+      - name: Clang version
+        run: clang --version
+      - name: "${{ matrix.toolchain }} with rustfmt, and wasm32"
+        uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: ${{ matrix.toolchain }}
+          target: wasm32-unknown-unknown
+      - name: Set Default Toolchain
+        run: rustup override set ${{ matrix.toolchain }}
+      - name: Rust version
+        run: rustc --version --verbose
+      - name: Add rust-src component
+        run: rustup component add rust-src --toolchain ${{ matrix.toolchain }}
+      - name: Verify Rust Toolchain
+        run: rustup show
+      - name: Generate code coverage
+        run: cargo +${{ matrix.toolchain }} llvm-cov --lcov --output-path llvm-cov-output.lcov
+      - name: Upload coverage reports to Codecov
+        uses: codecov/codecov-action@v4
+        with:
+          fail_ci_if_error: true
+          files: ./llvm-cov-output.lcov
+          token: ${{ secrets.CODECOV_TOKEN }}
+          verbose: true