feat: add simulator audio to WebRTC streams #505

Job	Run time
Client lint, build, and tests	33s
Build integration artifacts	2m 48s
Rust lint and unit tests	1m 27s
Packages and VS Code extension	34s
Android emulator integration (windows-latest)	10m 58s
Android emulator integration (ubuntu-latest)	5m 51s
CLI simulator integration	10m 21s
WebRTC stream benchmark	4m 43s
JS API simulator integration	6m 14s
	43m 29s

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