ci: add code coverage support

Signed-off-by: wanglei01 <[email protected]>

Author: wllenyj

.github/workflows/main.yml

@@ -20,6 +20,17 @@ jobs:
         with:
             toolchain: stable
             override: true
+            components: cargo, llvm-tools-preview
+
+      - name: Install cargo-llvm-cov
+        uses: taiki-e/install-action@cargo-llvm-cov
+
+      - name: Test and Generate code coverage
+        run: cargo llvm-cov --all-features --workspace --lcov --output-path lcov.info
+      - name: Upload coverage to Codecov
+        uses: codecov/codecov-action@v3
+        with:
+          files: lcov.info
+          fail_ci_if_error: true
+        
 
-      - name: Test with default feature
-        run: cargo test