Starts a server-side live stream of the call to a configured destination (e.g. RTMP).
Not yet implemented in v4. This method is on the API surface and will throw when called. Streaming state can already be observed via streaming$; server-side streams started outside the SDK still reflect there correctly.
Promise<void> — once implemented, resolves after the server has begun streaming.
Throws unconditionally — implementation pending.
streaming$ — observable of the current streaming state.startRecording — the parallel recording method, also not yet implemented.