feat: flex gap yoga bindings

[intergalacticspacehighway]

Summary

This PR adds React native binding for Yoga flex gap PR

Changelog

[General] [Added] - Flex gap yoga bindings

Test Plan

Run rn tester app and go to view example. You'll find a flex gap example. Example location - packages/rn-tester/js/examples/View/ViewExample.js

[analysis-bot]

Platform	Engine	Arch	Size (bytes)	Diff
android	hermes	arm64-v8a	7,611,599	+1,266
android	hermes	armeabi-v7a	7,026,589	+645
android	hermes	x86	7,911,167	+1,022
android	hermes	x86_64	7,884,548	+1,100
android	jsc	arm64-v8a	9,490,011	+1,306
android	jsc	armeabi-v7a	8,267,272	+694
android	jsc	x86	9,427,135	+1,057
android	jsc	x86_64	10,019,990	+1,151

Base commit: 3f8071d
Branch: main

[analysis-bot]

Platform	Engine	Arch	Size (bytes)	Diff
ios	-	universal	n/a	--

Base commit: 3f8071d
Branch: main

[cortinico]

(cc @NickGerleman if you want to pick this up).

This can't be merged as it is (I'm closing it for now).

You need to create a PR against https://github.com/facebook/yoga with all the changes inside the ReactCommon/yoga/* folder.

Once that PR lands, you can re-open this one (or send a new PR) and rebase on top of main.
The file you landed in Yoga should auto-sync between the two repos.

[jacobp100]

@cortinico we have a PR in Yoga - react/yoga#1116

Let us know if there’s anything our end we can do to help you guys merge it

[cortinico]

@NickGerleman is taking over that PR. Once it gets merged, let's reopen this one 👍

[NickGerleman]

Thank you for contributing this!

I split out your PR to Yoga, and have different sections out for review right now. I think it should be fully merged this week.

A consideration for this change is that style properties are currently passed to native components as top-level native component properties. So, adding a new style property adds a property to the same namespace folks are using for their custom components. This introduces the potential for collisions, which worries me a bit, especially for gap. It would mean that if someone previously created a component extending something like SimpleViewManager, and used the term previously for one of their own properties, we would introduce a silent conflict.

I've been digging a bit, into the right approach to take with this. E.g. if we may want to change the current style prop scheme, or whether we think this issue is rare enough to punt on it.

The other concern I have is around Fabric compatibility. I can see this PR edits some of the files I would expect to see for wiring the prop in fabric, but I'm not sure it's complete at the moment. E.g. there is a change to YogaStylableProps.cpp to add the property to YogaStylableProps::getDebugProps(), but YogaStylableProps::setProp() in the same file is not updated. We should be sure to validate that everything works as expected on the new architecture.

[intergalacticspacehighway]

Thanks for merging yoga and JNI changes @NickGerleman ❤️. I created a new PR with those changes.