add codecov upload action in coverage.yaml

.github/workflows/coverage.yaml

@@ -48,3 +48,27 @@ jobs:
             protocols/cobertura.xml
             roles/cobertura.xml
             utils/cobertura.xml
+            
+  codecov:
+    needs: tarpaulin-test
+
+    name: Codecov Upload
+    runs-on: ubuntu-latest
+
+    steps:
+
+      - name: Checkout repository
+        uses: actions/checkout@v3
+
+      - name: Download all workflow run artifacts
+        uses: actions/download-artifact@v3
+
+      - name: Display structure of downloaded files
+        run: ls -R
+
+      - name: Upload to codecov.io
+        uses: codecov/codecov-action@v3
+        with:
+          files: tarpaulin-report/*.xml
+          fail_ci_if_error: true
+          token: ${{ secrets.CODECOV_TOKEN }}