Implement additional JSON Schema keywords

[BelfordZ]

Summary

• support contains, propertyNames, unevaluatedItems and unevaluatedProperties
• add tests for new keywords
• clean up README

Testing

• npm test

---

https://chatgpt.com/codex/tasks/task_e_68550ccfe4e8832fb3c851a787f85996

[codecov-commenter]

⚠️ Please install the to ensure uploads and comments are reliably processed by Codecov.

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (b80010a) to head (9d53e0d).

❗ Your organization needs to install the Codecov GitHub app to enable full functionality.

Additional details and impacted files

@@            Coverage Diff            @@
##            master      #818   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            2         2           
  Lines          107       115    +8     
  Branches        38        42    +4     
=========================================
+ Hits           107       115    +8     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

[BelfordZ]

🎉 This PR is included in version 1.11.0 🎉

The release is available on:

• GitHub release
• 1.11.0
• npm package (@latest dist-tag)

Your semantic-release bot 📦🚀