ci: codeconv for github actions

Author: woile

.github/workflows/pythonpackage.yml

@@ -25,3 +25,11 @@ jobs:
     - name: Run tests
       run: |
         ./scripts/test
+    - name: Upload coverage to Codecov
+      if: runner.os == 'Linux'
+      uses: codecov/codecov-action@v1.0.3
+      with:
+        token: ${{secrets.CODECOV_TOKEN}}
+        file: ./coverage.xml
+        flags: unittests
+        name: codecov-umbrella