Add coverage report to CI checks

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

.github/workflows/coverage.yml

@@ -0,0 +1,32 @@
+name: Test Coverage
+
+on: [pull_request]
+
+jobs:
+  coverage:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out code
+        uses: actions/checkout@v2
+
+      - name: Set up Go
+        uses: actions/setup-go@v2
+        with:
+          go-version: '^1.21'
+
+      - name: Run tests and collect coverage
+        run: |
+          make test-coverage
+
+      - name: Generate coverage report
+        run: |
+          go tool cover -func=network-operator.cover
+
+      - name: Post coverage comment to PR
+        uses: machine-learning-apps/[email protected]
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          path: coverage.txt
+          regex: '^total:\\s*\\(statements\\)\\s*([0-9\\.]+)%'
+          message: "Code coverage on this PR is **${{ match }}%**. Please ensure this meets the project standards."