add codecov

Author: kasdihacene

.github/workflows/demo-workflow.yml

@@ -30,8 +30,16 @@ jobs:
     - name: Build with Maven
       run: mvn -B package --file pom.xml -Dmaven.test.skip=true
 
+    - uses: codecov/codecov-action@v1
+      with:
+        token: ${{ secrets.CODECOV_TOKEN }} # not required for public repos
+        file: ./coverage.xml # optional
+        flags: unittests # optional
+        name: codecov-umbrella # optional
+        fail_ci_if_error: true # optional (default = false)
+
     - name: Upload Maven build artifact
       uses: actions/upload-artifact@v1
       with:
         name: artifact
-        path: workflow-github-actions/target/workflow-github-actions-1.0-SNAPSHOT.jar
+        path: target/workflow-github-actions-1.0-SNAPSHOT.jar