Improve README with Enhanced Component Categorization and Documentation

[Copilot]

Overview

This PR enhances the README.md file with improved organization, clearer categorization, and more detailed component documentation.

Changes

• Reorganized Components: Components are now grouped into intuitive categories:

  • 🖱️ Inputs & Forms
  • 📖 Layout & Navigation
  • 🗂️ Data Display
  • ⚠️ Feedback & Messaging
  • 🔄 Loaders & Progress Indicators

• Enhanced Documentation:

  • Added detailed descriptions for each component category
  • Included component-specific usage examples
  • Added brief explanations of component functionality

• Improved Installation Instructions:

  • Clear npm/yarn installation guides
  • Simple, concrete usage examples
  • Quick start code samples that work out of the box

• Additional Sections:

  • New customization section showing how to override styles
  • Added accessibility information
  • Improved development and contribution guidelines
  • More structured testing information

Visual Improvements

• Added emoji icons for better visual categorization
• Improved markdown formatting for better readability
• Consistent styling throughout the documentation

These changes make the GoatUI documentation more user-friendly, especially for new developers learning the component library.

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