2 stage builds

[yousif-bugsnag]

Goal

Reduces CI bottlenecks by pushing the majority of React Native and RN CLI tests into a separate 'full' build pipeline

Design

Followed the same approach as the js performance repo. Full builds can be triggered for builds of next or main, with the commit message [full ci], or interactively via the buildkite UI.

All React Native & CLI tests except those for the latest version (RN 0.72 old and new arch) have been moved to the full build.

[github-actions]

@bugsnag/browser bundle size diff

	Minified	Minfied + Gzipped
Before	43.67 kB	13.40 kB
After	43.67 kB	13.40 kB
±	No change	No change

code coverage diff

<temporarily disabled>

Generated by 🚫 dangerJS against 72a40c0

[twometresteve]

You've followed the existing pattern perfectly by putting .full. in the filenames, but with the number of pipeline files now in the repo, it's hard to navigate them in a tree view. Could we either organise them into basic and full subdirectories underneath .buildkite, or bring the full. in each filename to the front so that they all appear together? I.e. full.pipeline.yml, full.react-native-android-pipeline.yml etc.

[twometresteve]

JS is still using master, so suggest this for future proofing:

Suggested change

	"$BUILDKITE_BRANCH" == "main" ||
	"$BUILDKITE_BRANCH" == "main" ||
	"$BUILDKITE_BRANCH" == "master" ||

[twometresteve]

Looks good in general, the branch name comment is the main (or do I mean master?) one to get in.