- Implemented GET, POST, PUT, and DELETE endpoints for managing LLM models and providers.
- Added user authorization checks to ensure only authorized users can access or modify resources.
- Enhanced provider and model retrieval functions to include user-specific data.
- Updated database service functions to handle user IDs for better data isolation.
- Introduced error handling for invalid inputs and unauthorized actions.
- Implemented GET, POST, PUT, DELETE endpoints for LLM providers and models.
- Added validation for provider and model IDs.
- Introduced functions to list, create, update, and delete providers and models in the service layer.
- Enhanced error handling for invalid inputs and non-existent resources.
- Updated database schema to include new provider and model management features.
