Upgrade package with latest Flutter and Dart docs

[RyanDsilva]

…ement solutions

Major version 1.0.0 release with comprehensive upgrades and new features:

NEW FEATURES:

• Add BLoC state management support with events and states
• Add Cubit state management (simplified BLoC)
• Add Riverpod 3.x with code generation and Freezed integration
• Add Provider with ChangeNotifier pattern
• Implement modern Dart 3 features (pattern matching, switch expressions, super.key)
• Add input validation for feature names (lowercase and underscores only)
• Add helpful dependency information after feature generation
• Enhance error handling with detailed error messages

BREAKING CHANGES:

• Update Dart SDK constraint to ^3.6.0 (was >=2.18.0 <4.0.0)
• Update Flutter constraint to >=3.38.0 (was >=3.3.0)
• Update all dependencies to latest versions:
  • args: ^2.6.0 (was ^2.4.1)
  • mason: ^0.1.0-dev.58 (was 0.1.0-dev.49)
  • path: ^1.9.0 (was ^1.8.2)
  • ansicolor: ^2.0.3 (was ^2.0.1)
  • test: ^1.25.10 (was ^1.24.3)

IMPROVEMENTS:

• Add lints package (^5.1.1) for code quality
• Add comprehensive analysis_options.yaml with recommended lints
• Update all templates to use super.key instead of Key? key
• Improve generated screens with AppBar and better structure
• Enhance command-line help with all supported types
• Add build time reporting in CLI output
• Update brick templates to version 2.0.0

DOCUMENTATION:

• Complete README rewrite with examples and comparisons
• Add detailed CHANGELOG following Keep a Changelog format
• Add individual README files for each state management brick
• Include dependency requirements and setup instructions
• Add state management comparison guide

TESTING:

• Add validation tests for feature names
• Add tests for supported state management types
• Improve test structure and coverage

All changes support production-ready Flutter applications with modern best practices.