Add Claude 3.7 Sonnet Thinking Mode

[malikrohail]

Implementation Details

• Added a toggle UI component in the chat interface to enable/disable thinking mode
• Configured the Anthropic API calls to include the thinking parameter when enabled
• Set default thinking budget to 2000 tokens (configurable)
• Added appropriate types and settings storage

Changes

• Added enableThinking and thinkingBudgetTokens to project settings
• Created a ThinkingToggle component that appears in the chat UI

Testing

• Verified thinking mode parameters are correctly sent to the API
• Tested enabling/disabling the feature to see if the model switches back to claude 3.7 sonnet without hinking