Needed by UE4 VR games.
Proton-Issue: https://github.com/ValveSoftware/Proton/issues/6533 Proton-Issue: https://github.com/ValveSoftware/Proton/issues/8457
-- v2: windows.perception.stub: Stub some functions. windows.perception.stub: Implement IHolographicSpace_get_PrimaryAdapterId(). windows.perception.stub/tests: Add IHolographicSpace::get_PrimaryAdapterId() tests. windows.perception.stub: Implement IHolographicSpaceInterop::CreateForWindow(). windows.perception.stub/tests: Add IHolographicSpaceInterop::CreateForWindow() tests.