[feature] Streming example

[predictron-cloud]

Is your feature request related to a problem? Please describe.

There is example of streaming app in flutter. But there is one in TypeScript.

Describe the solution you'd like

1. One user creates the streaming flow and streams his video and audio to the server.
2. Other participants connect to the room (on a server) and see his video and audio. Additionally:
3. Other participants can "turn on the microphone" (it will not be often) and say something, that everyone can hear. Most of the guys will keep silence for most of the time. So by default, everyone except the initiator will not be connected to the send audio channel, and when they "turn on the microphone" to say something, that should be connected to the send audio channel.

Describe alternatives you've considered AFAIK, The simple Room from Livekit Flutter Client can be used for it. But as far as I understand implementation of streaming in Typescript ( https://github.com/livekit-examples/livestream ) uses something different, not the same mechanism as the Room? Is that correct? Or it is just a simple Room, in which only one participant provides his video and audio? Or the streaming is separate thing which will be more performant and appropriate for this case?