[FEA] Add test coverage reporting to CI/CD pipeline

* Update GitHub Actions workflow to run tests with coverage
  - Install pytest and pytest-cov dependencies
  - Run pytest with --cov flag to collect coverage data for commitai package
* Generate coverage report after running tests
  - Use 'coverage report' command to output coverage metrics

This enhancement adds test coverage reporting to the existing CI/CD pipeline. By integrating coverage data collection and reporting, we can monitor the code coverage of the commitai package and ensure that the tests adequately exercise the codebase. This helps maintain code quality and identifies areas that may require additional testing.

Co-authored-by: Comai <github.com/lguibr/comai>

.github/workflows/main.yml

@@ -57,7 +57,7 @@ jobs:
           pip install pytest pytest-cov
       - name: Run tests with coverage
         run: |
-          pytest --cov=commitai ./commitai
+          pytest --cov=commitai ./commitai/test
       - name: Generate coverage report
         run: |
           coverage report -m