feat: MoveParticipant API (#1051)

* feat: MoveParticipant API

This new API would move a participant from one cloud room to another.
It will support the following use cases:
- warm transfer in voice AI
- fast switching between different live streams
- prejoin room in meetings

* generated protobuf

* add RTC message

* repeat field number

* generated protobuf

* rpc

* generated protobuf

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Co-authored-by: github-actions <41898282+github-actions[bot]@users.noreply.github.com>
Co-authored-by: cnderrauber <zengjie9004@gmail.com>

Author: 3 people