Upload coverage results to codecov (#100)

Author: cottsay

.github/workflows/ci.yaml

@@ -28,4 +28,8 @@ jobs:
           python -m pip install -U -e .[test] pytest-cov
       - name: Run tests
         run: |
-          python -m pytest tests --cov
+          python -m pytest tests --cov=osrf_pycommon
+      - name: Upload coverage
+        uses: codecov/codecov-action@v5
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}