feat: added valid-repository-directory rule

[JoshuaKGoldberg]

PR Checklist

• Addresses an existing open issue: fixes Bring in a ensure-repository-directory rule equivalent #53
• That issue was marked as status: accepting prs
• Steps in CONTRIBUTING.md were taken

Overview

Equivalent to json-files/ensure-repository-directory. Renamed to valid-* to match the precedent of the existing rules valid-package-def and valid-package-dependency.

Re-uses the findJSONLiteralWithValue utility and renames it to the more appropriate findPropertyWithKeyValue

[codecov]

Codecov Report

Attention: 3 lines in your changes are missing coverage. Please review.

Comparison is base (928c5b4) 98.89% compared to head (fcd5b96) 98.52%.

Files	Patch %	Lines
src/rules/valid-repository-directory.ts	95.38%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #123      +/-   ##
==========================================
- Coverage   98.89%   98.52%   -0.37%     
==========================================
  Files           8       10       +2     
  Lines         542      610      +68     
  Branches       47       49       +2     
==========================================
+ Hits          536      601      +65     
- Misses          6        9       +3     

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[JoshuaKGoldberg]

I don't know why the test coverage reports aren't counting the line as hit. Will merge with not quite 100% coverage.

[github-actions]

🎉 This is included in version v0.7.0 🎉

The release is available on:

• GitHub releases
• npm package (@latest dist-tag)

Cheers! 📦🚀