Map google scholar package imports

[StantonMatt]

Summary

• map google_scholar_py imports to the scrape-google-scholar-py distribution
• normalize local distribution-name comparisons so mapped hyphenated package names still match underscore-normalized installed dist-info names
• keep serpapi unmapped because PyPI now has an official serpapi package; forcing it to google-search-results would break current import serpapi users

Addresses the google_scholar_py half of #370.

Verification

• .venv/bin/python -m unittest tests.test_pipreqs.TestPipreqs.test_get_pkg_names_maps_google_scholar tests.test_pipreqs.TestPipreqs.test_get_import_local_matches_normalized_distribution_names tests.test_pipreqs.TestPipreqs.test_get_missing_imports_matches_normalized_distribution_names
• .venv/bin/python -m unittest discover
• uv run --with flake8 flake8 pipreqs tests
• git diff --check
• review-fix-loop: clean after fixing reviewer findings

[bubaizhanshen]

I checked this locally on Python 3.10.

The google scholar mapping resolves as expected, and the normalized local-distribution comparison covers the scrape-google-scholar-py vs scrape_google_scholar_py spelling difference. With a local record named scrape_google_scholar_py exporting google_scholar_py, both the mapped distribution name and the import export are treated as present, not missing.

Checks I ran:

python -m unittest tests.test_pipreqs.TestPipreqs.test_get_pkg_names_maps_google_scholar tests.test_pipreqs.TestPipreqs.test_get_import_local_matches_normalized_distribution_names tests.test_pipreqs.TestPipreqs.test_get_missing_imports_matches_normalized_distribution_names
python -m py_compile pipreqs/pipreqs.py tests/test_pipreqs.py
python -m flake8 pipreqs tests
git diff --check upstream/master...HEAD

All passed.