Add a custom CLI to build iOS apps

[blakef]

Summary: A simple CLI to build our iOS helloworld application. This isn't intended for an audience other that the release team.

Some Framwork authors might be interested in it as an example of how to use our react-native/core-cli-utils to build a React Native application.

Changelog: [Internal]

I'm not going to export because it's not that interesting to folks outside / in need of scrutiny.

bypass-github-export-checks

Reviewed By: cipolleschi

Differential Revision: D56243647

[facebook-github-bot]

This pull request was exported from Phabricator. Differential Revision: D56243647

[analysis-bot]

Platform	Engine	Arch	Size (bytes)	Diff
android	hermes	arm64-v8a	19,443,690	-3
android	hermes	armeabi-v7a	n/a	--
android	hermes	x86	n/a	--
android	hermes	x86_64	n/a	--
android	jsc	arm64-v8a	22,817,156	+0
android	jsc	armeabi-v7a	n/a	--
android	jsc	x86	n/a	--
android	jsc	x86_64	n/a	--

Base commit: 78ab5f4b836d64b71760754c7cce1315630640c7 Branch: main

[facebook-github-bot]

This pull request has been merged in facebook/react-native@71c293d716568aafdacc39553797d4c7fc1939f3.

[github-actions[bot]]

This pull request was successfully merged by @blakef in 71c293d716568aafdacc39553797d4c7fc1939f3.

^{When will my fix make it into a release? | How to file a pick request?}