Add Code Coverage (#37)

Author: seljabali

.github/workflows/main.yml

@@ -29,3 +29,8 @@ jobs:
 
       - name: Unit tests
         run: bash ./gradlew test --stacktrace
+
+      - name: Upload coverage reports to Codecov
+        uses: codecov/[email protected]
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}