feat: add simulator audio to WebRTC streams #503

Job	Run time
Client lint, build, and tests	36s
Build integration artifacts	3m 20s
Rust lint and unit tests	1m 18s
Packages and VS Code extension	36s
Android emulator integration (ubuntu-latest)	6m 10s
Android emulator integration (windows-latest)	8m 22s
JS API simulator integration	7m 11s
CLI simulator integration	6m 54s
WebRTC stream benchmark	6m 5s
	40m 32s

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