Enhanced descriptions and keywords for better project discoverability

[Copilot]

This PR addresses the request to add comprehensive descriptions and keywords to improve the project's discoverability and SEO across different platforms.

Changes Made

📦 package.json Enhancements

• Refined description: Made it more concise and impactful for npm discoverability while highlighting key features
• Expanded keywords: Increased from 21 to 58 comprehensive keywords covering:
  • Chess-specific terms (tactics, strategy, notation, ratings)
  • Technical keywords (browser automation, DOM manipulation, Manifest V3)
  • Educational terms (learning tool, beginner-friendly, chess education)
  • AI/ML related terms (artificial intelligence, machine learning, chess AI)
  • Platform-specific keywords (chess.com, web chess, online chess)

🔧 manifest.json Improvements

• Chrome Web Store optimized description: Added emoji and engaging language while maintaining the educational focus
• Made the description more appealing for Chrome Web Store users while emphasizing responsible use

📚 README.md Enhancements

• Visual improvements: Added emojis and better section organization for improved readability
• Comprehensive overview section: Added a new overview with key features and target audience
• Enhanced installation guide: More detailed step-by-step instructions with clear formatting
• Better structure: Improved section headers and visual hierarchy
• SEO keywords section: Added a dedicated keywords section for better search visibility

🔧 Infrastructure

• Added .gitignore: Prevents node_modules and other build artifacts from being committed

Impact

These changes will significantly improve the project's discoverability across:

• npm search results with comprehensive, relevant keywords
• Chrome Web Store with an engaging, emoji-enhanced description
• GitHub/web searches with better README content and SEO keywords
• Developer community with clearer technical descriptions and use cases

The enhancements maintain the project's educational focus while making it more accessible to different audiences including chess students, developers, and researchers.

---

💬 Share your feedback on Copilot coding agent for the chance to win a $200 gift card! Click here to start the survey.