Add Anthropic Claude API Integration

[virtualsteve-star]

• Integrate Anthropic Claude API
• Implement Claude-specific configuration options
• Add model switching capabilities for Claude models
• Add configuration options for API keys and settings
• Implement proper error handling for Claude API
• Add Claude-specific prompt formatting
• Include Claude model version selection
• Add Claude API rate limiting handling
• Implement Claude-specific response parsing
• Add Claude API usage monitoring