feat: added code coverage reporting (#9081)

* added code coverage reporting

* fix issues

* more cleanup

* fix action configs

* cleanup token debug

* added comments to codecov.yml config

---------

Co-authored-by: Edwin Jose <edwin.jose@datastax.com>

.github/workflows/jest_test.yml

@@ -2,6 +2,9 @@ name: Run Frontend Jest Unit Tests
 
 on:
   workflow_call:
+    secrets:
+      CODECOV_TOKEN:
+        required: false
     inputs:
       ref:
         description: "(Optional) ref to checkout"
@@ -65,6 +68,16 @@ jobs:
           junitxml-title: Unit Test Results
           junitxml-path: src/frontend/test-results/junit.xml
 
+      - name: Upload coverage to Codecov
+        uses: codecov/codecov-action@v5
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}
+          files: src/frontend/coverage/lcov.info
+          flags: frontend
+          name: frontend-coverage
+          fail_ci_if_error: false
+          directory: src/frontend/coverage/
+
       - name: Upload Coverage Reports
         uses: actions/upload-artifact@v4
         if: always()