Changelog:
- Added multiple new providers - opencode, powerbrain, anyapi, litellm, minimax, ollamacloud.
- Removed providers which don't work.
- Added new image gen providers - magicstudio, anyapi
- Made fixes for some providers
- Fixed providers not using AI_API_KEY
- Added API key environment variables for all providers which use an API key
- Added config file support
- Fixed many bugs
- Added exa web search provider (works without API key)
- Added provider rotation support