Add AI QA tools to Testing & QA Tools section

[JayantChopra]

🚀 Summary

Added a QA tool to the AI tool directory for code review and testing section.

✅ Checklist

• I have read the contribution guidelines
• The tool is AI-related and useful for developers
• I have added a short, clear description of the tool
• The link is not a duplicate of an existing one
• The title of the link is properly capitalized
• The link follows the Awesome List format (- [Tool Name](link) – description)
• My change does not include unrelated files or changes

📌 Why is this tool awesome?

It's extremely awesome because not only is it helping 100+ teams save 12 hours weekly- but because we are the first to introduce the idea of a QA LRA system :)

🔗 https://www.polarity.so/

📝 Additional context

Thanks for hosting this!