[3.12] pythongh-138171: Migrate iOS testbed location and add Apple build script (python#138176)

Adds tooling to generate and test an iOS XCframework, in a way that will also facilitate
adding other XCframework targets for other Apple platforms (tvOS, watchOS, visionOS and
even macOS, potentially).

---------
Co-authored-by: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>

Author: freakboy3742

.github/CODEOWNERS

@@ -168,6 +168,36 @@ Lib/ast.py                    @isidentical
 # zipfile.Path
 **/*zipfile/_path/*           @jaraco
 
+# Argument Clinic
+/Tools/clinic/**              @erlend-aasland
+/Lib/test/test_clinic.py      @erlend-aasland
+Doc/howto/clinic.rst          @erlend-aasland
+
+# Subinterpreters
+**/*interpreteridobject.*     @ericsnowcurrently
+**/*crossinterp*              @ericsnowcurrently
+Lib/test/support/interpreters/  @ericsnowcurrently
+Modules/_interp*module.c      @ericsnowcurrently
+Lib/test/test_interpreters/   @ericsnowcurrently
+
+# Android
+**/*Android*                  @mhsmith @freakboy3742
+**/*android*                  @mhsmith @freakboy3742
+
+# Apple
+/Apple                        @freakboy3742
+
+# iOS (but not termios)
+**/iOS*                       @freakboy3742
+**/ios*                       @freakboy3742
+**/*_iOS*                     @freakboy3742
+**/*_ios*                     @freakboy3742
+**/*-iOS*                     @freakboy3742
+**/*-ios*                     @freakboy3742
+
+# WebAssembly
+/Tools/wasm/                  @brettcannon
+
 # SBOM
 /Misc/externals.spdx.json     @sethmlarson
 /Misc/sbom.spdx.json          @sethmlarson

.gitignore

@@ -71,15 +71,15 @@ Lib/test/data/*
 /Makefile
 /Makefile.pre
 /iOSTestbed.*
-iOS/Frameworks/
-iOS/Resources/Info.plist
-iOS/testbed/build
-iOS/testbed/Python.xcframework/ios-*/bin
-iOS/testbed/Python.xcframework/ios-*/include
-iOS/testbed/Python.xcframework/ios-*/lib
-iOS/testbed/Python.xcframework/ios-*/Python.framework
-iOS/testbed/iOSTestbed.xcodeproj/project.xcworkspace
-iOS/testbed/iOSTestbed.xcodeproj/xcuserdata
+Apple/iOS/Frameworks/
+Apple/iOS/Resources/Info.plist
+Apple/testbed/build
+Apple/testbed/Python.xcframework/*/bin
+Apple/testbed/Python.xcframework/*/include
+Apple/testbed/Python.xcframework/*/lib
+Apple/testbed/Python.xcframework/*/Python.framework
+Apple/testbed/*Testbed.xcodeproj/project.xcworkspace
+Apple/testbed/*Testbed.xcodeproj/xcuserdata
 Mac/Makefile
 Mac/PythonLauncher/Info.plist
 Mac/PythonLauncher/Makefile