Merge pull request #14 from twais/devops/introduce-codecov

Introduce code coverage

Author: twais

.github/workflows/python-app.yml

@@ -30,3 +30,5 @@ jobs:
     - name: Test with pytest
       run: |
         pytest
+    - name: Upload coverage reports to Codecov
+      uses: codecov/codecov-action@v3