OpenWebUI project can be suggested in Demo deployment framework option

Frameworks like [Gradio](https://www.gradio.app/) and [Streamlit](https://docs.streamlit.io/) are pretty good BUT open-webui is much more advanced and overall better option in my opinion.
Open-webui is great open source project which i and many thousands of users are using locally to connect with different llms through open ai api compatibility (with help of litellm, which is another great open source project we can connect with 100+ llms easily) and use it for either personal purpose or for providing it to customers. It is pretty awesome project you can checkout too :-) - https://github.com/open-webui/open-webui

No files, tests, or entry points are named. Inspect the demo deployment framework's option definitions and the existing Gradio and Streamlit integrations first; done means OpenWebUI is offered as a selectable option with its deployment behavior documented or verified.

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