Implement private CoreSimulator boot path and direct display attach #264

Job	Run time
Build integration artifacts	2m 8s
Client lint, build, and tests	32s
Packages and VS Code extension	23s
Rust lint and unit tests	1m 3s
Android emulator integration	5m 56s
JS API simulator integration	4m 11s
CLI simulator integration	8m 36s
	22m 49s

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