[Draft] feat: add macOS support

[Saadnajmi]

Note

This PR is a working branch of all changes needed to get a PoC of macOS working. It will be split off into multiple smaller PRs like #2835 before I mark it as ready for review

Summary

Add macOS support for React Native Skia. Some notes along the way

• react-native-test-app has an expo config plugin to add reanimated support. This doesn't work with reanimated 3.4.0+. Luckily, after 3.4.0, we don't need a plugin at all (@tido64 fyi) (related [3.4] Fails to build in expo eas software-mansion/react-native-reanimated#4831)
• react-native-screens doesn't have macOS support (yet), so I couldn't use the larger test app with multiple examples. To work around this, I registered the examples with RNTA directly in the app.json/Appregistry. I think I'd rather undo this and just have one example to check this in, while I go add support for react-native-screens.
• I was having trouble with the Turbomodule registry not finding WebGPUModule (even though it listed it as registered). So I commented out any tests involving webgpu in this draft PR.
• I had to comment this bit of code out of rn-gesture-handler to stop it from throwing an error. It still works 🤷

  // if (__DEV__ && !rootViewContext && !isJestEnv() && Platform.OS !== 'web') {
  //   throw new Error(
  //     'GestureDetector must be used as a descendant of GestureHandlerRootView. Otherwise the gestures will not be recognized. See https://docs.swmansion.com/react-native-gesture-handler/docs/installation for more details.'
  //   );
  // }

Test Plan

Same as the "Fabric" example app, I have the breathing animation example page working.

Screen.Recording.2024-12-25.at.7.22.59.PM.mov

[wcandillon]

this is very exciting :)