chore: Add coverage to GH CI

.github/workflows/go.yml

@@ -44,3 +44,32 @@ jobs:
 
       - name: Test code
         run: go test -race -v ./...
+
+  coverage:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Install Go
+        if: success()
+        uses: actions/setup-go@v3
+        with:
+          go-version: '1.20'
+
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      - name: Calc coverage
+        run: |
+          export PATH=$PATH:$(go env GOPATH)/bin
+          go test -v -covermode=count -coverprofile=coverage.out
+
+      - name: Convert coverage to lcov
+        uses: jandelgado/gcov2lcov-action@v1.0.9
+        with:
+          infile: coverage.out
+          outfile: coverage.lcov
+
+      - name: Coveralls
+        uses: coverallsapp/github-action@1.1.3
+        with:
+          github-token: ${{ secrets.github_token }}
+          path-to-lcov: coverage.lcov