[CONFIG] Code coverage added to gradle workflow

Author: sir-gon

.github/workflows/gradle.yml

@@ -32,3 +32,5 @@ jobs:
       uses: gradle/gradle-build-action@67421db6bd0bf253fb4bd25b31ebb98943c375e1
       with:
         arguments: build
+    - name: Upload coverage reports to Codecov
+      uses: codecov/codecov-action@v3