feat: add visionOS support

[okwasniewski]

This PR adds visionOS support.

I've refactored some parts of the code to take the currently presented scene by wrapping built-in utility RCTKeyWindow() to work in async scenarios.

Testing

1. npx @callstack/react-native-visionos init App
2. Add react-native-iap
3. Check out if it works

Demo

CleanShot.2024-03-05.at.09.53.42.mp4

[okwasniewski]

I've refactored this to use @available the SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO was returning "1.0" for visionOS and @available is universal.

Source: https://roadfiresoftware.com/2014/01/the-right-way-to-check-the-ios-version-in-an-app/

[okwasniewski]

Build is failing because CI needs a newer Xcode version

[matthargett]

@hyochan can @okwasniewski get some permissions to help work out the CI issue, so this PR can be made to pass CI? His similar visionOS work has been merged in gesture-handler, reanimated, screens, and numerous other projects. It would be great to get IAP support into a release of our react-native-visionos apps soon without the need for local patches :D

[okwasniewski]

Hey @hyochan, I've fixed the CI and the PR is now ready for review. Let me know if I can help you in any way to get this merged

[matthargett]

@TheRogue76 was there anything else needed for this to be merged? I'm excited to remove our local patch-package and let other RNV apps start to monetize :)

[TheRogue76]

@TheRogue76 was there anything else needed for this to be merged? I'm excited to remove our local patch-package and let other RNV apps start to monetize :)

I am not a maintainer of RN IAP, simply an open-source contributor who used this repo at one point and had it marked as watched. I just double-checked the PR. I do not have access to the repo to merge or block the PRs. As far as I see, the PR is perfectly fine.