Add issue templates for New Architecture

[cortinico]

Summary

I'm adding a new Issue Template for New Architecture issues + I've added a contact entry for the Working Group.

Changelog

[Internal] - Add issue templates for New Architecture

Test Plan

Tested this here
https://github.com/cortinico/react-native/issues/new/choose

[facebook-github-bot]

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

[analysis-bot]

Platform	Engine	Arch	Size (bytes)	Diff
android	hermes	arm64-v8a	7,789,539	+0
android	hermes	armeabi-v7a	7,193,181	+0
android	hermes	x86	8,099,361	+0
android	hermes	x86_64	8,078,451	+0
android	jsc	arm64-v8a	9,662,151	+0
android	jsc	armeabi-v7a	8,434,564	+0
android	jsc	x86	9,612,577	+0
android	jsc	x86_64	10,208,856	+0

Base commit: 99e7373
Branch: main

[analysis-bot]

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

Base commit: 75fb346
Branch: main

[react-native-bot]

This pull request was successfully merged by @cortinico in bf71f10.

^{When will my fix make it into a release? | Upcoming Releases}