Gold google-analyzer tests
This commit fixes an ImportError: attempted relative import beyond top-level package that occurred when running tests in examples/google-ads-account-analyzer-demo/tests/test_analyzer.py using standard test discovery.
The import mechanism for the analyzer module within test_analyzer.py has been made more robust by dynamically adding the parent directory (examples/google-ads-account-analyzer-demo) to sys.path before attempting the import. This ensures that the analyzer module can be correctly located regardless of how the tests are invoked (e.g., direct execution, unittest discover).
The changes ensure that tests can be reliably run from the repository root using commands like python -m unittest discover -s examples/google-ads-account-analyzer-demo/tests -p test_analyzer.py.