Upload test coverage report to Codecov

Author: eel76

.github/workflows/coverage.yml

@@ -25,8 +25,22 @@ jobs:
           cmake --build build --config Debug --target test
           cmake --build build --config Debug --target coverage
 
-    - name: Create test coverage report
+    - name: Upload test coverage report to Codecov
+      uses: codecov/codecov-action@v4
+      with:
+        fail_ci_if_error: true # optional (default = false)
+        disable_search: true # optional (default = false)
+        files: ./build/coverage.cobertura.xml # optional
+        flags: unittests # optional
+        # name: codecov-umbrella # optional
+        token: ${{ secrets.CODECOV_TOKEN }}
+        verbose: true # optional (default = false)
+
+    - name: Create test coverage summary
       uses: irongut/CodeCoverageSummary@v1.3.0
       with:
         filename: build/**/coverage.cobertura.xml
         badge: true
+        format: markdown
+        output: both
+