feat(camera): add iOS simulator camera simulation #472

Job	Run time
Client lint, build, and tests	41s
Packages and VS Code extension	37s
Rust lint and unit tests	2m 59s
Build integration artifacts	2m 21s
Android emulator integration	6m 36s
CLI simulator integration	7m 7s
WebRTC stream benchmark	6m 1s
JS API simulator integration	4m 58s
	31m 20s

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