- Introduced `LMStudioProvider` to the provider system.
- Added a new fixture `lmstudio_provider` in `conftest.py` for testing.
- Updated `get_provider` function to handle `lmstudio` as a valid provider type.
- Enhanced README and `.env.example` to include LM Studio configuration details.
- Updated settings to accommodate LM Studio's base URL and provider type.
- Added tests to verify the functionality of the LM Studio provider.
- Introduced OpenRouter as a new provider option in settings and environment configuration.
- Updated README.md to include instructions for using OpenRouter.
- Enhanced the message converter to support reasoning content for OpenRouter.
- Added tests for OpenRouter provider functionality and message conversion.
- Updated dependencies to include OpenRouterProvider.
