Adds the modernQuest and quest1 headset flavours (Kryo CPU target, direct-VR
library entry on Quest 1), records the CPU target in the game kit and checks
it wherever a kit or game package is used, and gates the Quest 1 EFB-copy and
pipeline-scheduling workarounds on the monterey device.
Resolved docs/quest-port.md by keeping both sides: the foveated rendering
section and the Quest 1 renderer compatibility section, and both Build-Quest.ps1
command lines.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>