Shares the iOS frontend, with camera, location, motion, photo/document
pickers, share sheet, clipboard, microphone, battery and rotation compiled
out. The view controller is a GCEventViewController, so controllers only
reach us through GCController, and the Siri Remote is read as a micro
gamepad and sent as arrow/enter/escape/back keys. tvOS has no persistent
storage besides NSUserDefaults, so the memory stick lives in Caches for now.
Configure with -DIOS_PLATFORM=TVOS. The MoltenVK submodule gets the tvOS
slice from the same stock v1.4.2 release.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>