feat: Add Gemini Utility Modules and Documentation Improvements Add prompt optimizer, response cache manager, and model config validator utilities plus improve project documentation

[purvanshjoshi]

Summary

This pull request adds valuable utility modules for Gemini API integration and improves project documentation across multiple files.

Changes

New Python Utilities (3 files)

1. prompt_optimizer.py - Gemini prompt optimization and validation

   • PromptOptimizer class for normalizing and validating prompts
   • Methods for prompt quality checking and enhancement
   • Configurable min/max prompt length constraints

2. response_cache.py - Response caching manager with LRU and TTL

   • ResponseCache class for efficient API response management
   • SHA256-based cache key generation from prompts and models
   • TTL-based automatic cache expiration (configurable, default 24h)
   • Automatic eviction of oldest entries when cache is full

3. model_config_validator.py - Configuration validation for Gemini models

   • ModelConfig dataclass with type hints and validation
   • ConfigValidator class with comprehensive parameter checks
   • Support for all Gemini models (pro, pro-vision, 1.5-pro, 1.5-flash)
   • Temperature (0-2), top_p (0-1), max_tokens (1-32768) validation

Documentation Improvements (5 files)

1. README.md - Added helpful comment documenting resource collection purpose
2. RESOURCES.md - Added Latest Updates section with Gemini 3 Flash highlights
3. CONTRIBUTING.md - Added Testing AI Models section with best practices
4. CODE_OF_CONDUCT.md - Added Community Support section
5. SECURITY.md - Added Data Protection Best Practices

Why These Changes?

• Utilities: Provide developers with production-ready, reusable components for common Gemini API tasks
• Documentation: Improve project clarity, contributor guidelines, and community engagement
• Quality: All code includes comprehensive docstrings, type hints, and follows Python best practices

Testing

• All utilities can be tested with the provided __main__ sections
• No external dependencies beyond standard library
• Suitable for inclusion in educational resources and sample projects

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