[Registry] Publish all files tracked by git

[robinjhuang]

Previously, we checked gitignore for files that should not be published. However, some .gitignores were out of sync with files that are already tracked by git. Simplify the implementation by calling git ls-files

[robinjhuang]

Suggestion by @webfiltered , we can use git ls-files

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅