Add build support for Apple visionOS

Feature or enhancement

Proposal:

I've been using CPython in my iOS app successfully - but I need to bring my app to visionOS.

Happy to try adding support to the build myself - but I don't know the configure scripts very well. I do have hardware and would also be happy to test.

To be clear - not asking for any sort of specific support. Would just be happy to have build output for visionOS similar to tvOS/watchOS.

Has this already been discussed elsewhere?

No response given

Links to previous discussion of this feature:

No response

まず、configure スクリプトと関連する build パスにおける、既存の iOS、tvOS、watchOS サポートを比較します。visionOS がこれらのプラットフォームと同等の build 出力を生成するにはどうすべきかを判断し、その後、利用可能な visionOS ハードウェアを使って結果を検証します。この issue では、特定のファイルやテストは指定されていません。