Suggestion: Add a polished example with basic styling to documentation

### Describe the problem Hi LiveKit team, I’ve been testing the example in the documentation: `<LiveKitRoom token={TOKEN} serverUrl={WS_URL} connect={true}> <VideoConference /> </LiveKitRoom>` While it works functionally, the UI looks very basic and unstyled. It’s not clear from the docs whether the library includes any pre-styled themes or layouts. <img width="1366" height="926" alt="Image" src="https://github.com/user-attachments/assets/643b8e2d-55e7-49ad-87f3-a10014b44418" /> ### Describe the proposed solution It could be helpful for new users if the documentation included: A working example with minimal CSS for a cleaner video conference layout. This would make it easier for developers to get started and have a presentable UI out-of-the-box. Thanks for considering! ### Alternatives considered _No response_ ### Importance would make my life easier ### Additional Information _No response_