Feat/emoji support

[untcha]

✨ Add Emoji Support to Meteor

🎯 Overview

This PR introduces comprehensive emoji support to Meteor, allowing users to enhance their conventional commit workflows with visual flair while maintaining full backward compatibility with existing configurations.

✨ What's New

Core Features

• 🎨 Emoji Configuration: Add emojis to commit types through a new emoji field in prefix configurations
• 🔧 Toggle Control: Global useEmojis flag to enable/disable emoji display
• 🔄 Backward Compatibility: Existing configurations work unchanged (emojis are optional and disabled by default)
• 📐 Dynamic Formatting: Enhanced visual alignment with lipgloss-powered column formatting

Configuration Example

{
  "useEmojis": true,
  "prefixes": [
    { "type": "feat", "description": "a new feature", "emoji": "✨" },
    { "type": "fix", "description": "a bug fix", "emoji": "🐛" },
    { "type": "docs", "description": "documentation changes", "emoji": "📚" }
  ]
}

Visual Enhancement

• When useEmojis is true: Options display as "feat ✨ - a new feature"
• When useEmojis is false: Traditional display without emojis
• Intelligent column width measurement for perfect alignment

🚀 Implementation Highlights

Performance Optimizations

• Single-pass width measurement with measureColumnWidths function
• Centralized style creation using createColumnStyles for consistency
• Unified option building through buildPrefixOption function
• Reduced duplicate calculations for better performance

Code Quality Improvements

• Enhanced code maintainability through structural refactoring
• Comprehensive test coverage for new functionality
• Dynamic width adjustment supporting optional emoji integration
• Clean separation of concerns between emoji logic and core functionality

🔧 Technical Changes

Modified Files

• README.md: Added emoji configuration documentation and examples
• config.go: Added UseEmojis field to configuration struct
• pkg/config/config.go: Enhanced default configuration handling
• pkg/config/prefix.go: Major refactor for emoji support and formatting
• pkg/config/prefix_test.go: Comprehensive test suite additions

Key Functions

• OptionsWithEmojis(): Optimized emoji-aware option rendering
• measureColumnWidths(): Efficient column width calculation
• createColumnStyles(): Centralized styling for consistent presentation
• buildPrefixOption(): Unified prefix option construction

🎭 User Experience

This enhancement makes commit type selection more visually appealing and intuitive while preserving the clean, professional experience users expect from Meteor. The emoji integration is:

• Optional: Disabled by default to maintain existing workflows
• Configurable: Full control over which emojis to use
• Consistent: Professional alignment and formatting
• Performant: Optimized rendering with minimal overhead

🧪 Testing

• ✅ Comprehensive unit tests for all emoji functionality
• ✅ Backward compatibility validation
• ✅ Performance benchmarking for formatting operations
• ✅ Visual alignment testing across different terminal widths

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This PR transforms Meteor's user interface while respecting existing workflows, making conventional commits more engaging and visually distinctive! 🚀