Implement support for HuggingFace Inference Endpoints (#680)

docker/.env.example

.../src/components/LLMSelection/HuggingFaceOptions/index.jsx

frontend/src/media/llmprovider/huggingface.png

frontend/src/pages/GeneralSettings/LLMPreference/index.jsx

...end/src/pages/OnboardingFlow/Steps/DataHandling/index.jsx

...nd/src/pages/OnboardingFlow/Steps/LLMPreference/index.jsx

server/.env.example

server/models/systemSettings.js

server/utils/AiProviders/huggingface/index.js

server/utils/chats/stream.js

server/utils/helpers/index.js

server/utils/helpers/updateENV.js