Add Github action for Code-coverage

Author: SuhashiniNaik

.github/workflows/code-coverage.yml

@@ -38,7 +38,7 @@ jobs:
     - name: Capture code coverage
       run: |
         echo "Capturing code coverage..."
-        lcov --capture --directory . \
+        lcov --capture --directory \
              --output-file cmake-build-unit-tests/coverage_unfiltered.info
 
     - name: Filter out 3rd party and mock files