[iOS] Bridgeless: Expose host delegate methods

[zhongwuzw]

Summary:

Expose host delegate methods that users can do some customize work.

Changelog:

[IOS] [ADDED] - Bridgeless: Expose host delegate methods

Test Plan:

Users can do some customized work by RCTRootViewFactory.

[cipolleschi]

Hi @zhongwuzw, thanks for the PR! I think that the basic idea is very good, but as it is right now, it is not generally usable.
The RCTRootViewFactory is an internal class and most users will not manipulate it directly, unless they are in a brownfield setup.

I think that a better approach would be to make it accept a HostDelegate object in the as init parameter (or as part of the configuration) and set that object as delegate for the the host (Also, this favors composability over inheritance, which is always good).

Then, we need to wire this up in the RCTAppDelegate, somehow.

[analysis-bot]

Platform	Engine	Arch	Size (bytes)	Diff
android	hermes	arm64-v8a	19,410,759	+15
android	hermes	armeabi-v7a	n/a	--
android	hermes	x86	n/a	--
android	hermes	x86_64	n/a	--
android	jsc	arm64-v8a	22,784,271	+1
android	jsc	armeabi-v7a	n/a	--
android	jsc	x86	n/a	--
android	jsc	x86_64	n/a	--

Base commit: 03a51da
Branch: main

[facebook-github-bot]

@cipolleschi has imported this pull request. If you are a Meta employee, you can view this diff on Phabricator.

[cipolleschi]

/rebase - this comment automatically rebase on top of main

[facebook-github-bot]

@cipolleschi merged this pull request in f500b47.

[github-actions]

This pull request was successfully merged by @zhongwuzw in f500b47.

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