* Add API key management features and health check to Dockerfile
- Introduced API key model and related functions for creating, authenticating, and managing API keys.
- Updated FastAPI application to include a health check endpoint.
- Enhanced the settings page to allow users to create, delete, and toggle API keys.
- Updated README to document the new health check feature.
* Delete DOCKER_HEALTH_CHECK.md
* Refactor API Key implementation and update documentation
- Renamed ApiKey model to APIKey for consistency.
- Updated references to ApiKey in authentication and settings modules.
- Removed deprecated health check test script.
- Simplified API routes and removed unused endpoints.
- Enhanced API key management in settings with improved UI.
- Added comprehensive API documentation for key management and usage.
- Removed generate_openapi.py script as it is no longer needed.
- Created a new Alembic migration for API key table.
