CompositorServices framework

[rolfbjarne]

We're currently not binding the CompositorServices framework:

• It seems to be a visionOS-only framework, even though it was added to macOS in macOS 26. A few mentions in the documentation:
  • "Create a fully immersive experience in visionOS [...]"
  • "The result of your drawing efforts is two images, one for each eye, to create a stereosopic effect when viewed on Apple Vision Pro."
• It seems to depend on / require SwiftUI:
  • "Compositor Services provides a bridge between your SwiftUI code and your Metal rendering engine code."

As such, it doesn't look like it makes much sense at the very least until we've implemented SwiftUI support