[Monorepo] Import gutenberg-mobile as new WordPress react-native packages

[Tug]

Description

Explores #11491.

This is an experiment to add gutenberg-mobile build and tools to gutenberg.

New packages added:

• @wordpress/react-native-gutenberg-editor
• @wordpress/react-native-gutenberg-bridge
• @wordpress/react-native-aztec
• @wordpress/react-native-e2e-tests

Usual yarn commands ran from gutenberg-mobile are now accessible from gutenberg using npm run native ....

For instance:

• yarn start => npm run native start

bundle however, has been replaced with build to follow gutenberg naming conventions

• yarn bundle:android => npm run native build

Some commands that are out of date have been removed (makepot...)

This is still a work in progress. Currently, the demo app does not work as master is broken on native (see #17228 for a fix), native tests are failing with TypeError: r.editor is not a function in packages/edit-post/src/test/editor.native.js, and many things remain untested.

How has this been tested?

TBD.

• npm install
• Try the demo app on android: npm run native start:reset and npm run native android
• Try building the app: npm run build
  ...

Types of changes

Add new native packages, for native build, unifying the 2 repositories

Checklist:

• My code is tested.
• My code follows the WordPress code style.
• My code follows the accessibility standards.
• My code has proper inline documentation.
• I've included developer documentation if appropriate.
• I've checked that the licencing is OK
• I've checked that package release is working as expected (lerna)
• I've checked that installing dependencies works as expected, and that changes to package-lock.json are OK
• I've checked that we are up to date with gutenberg-mobile develop branch
• I have informed concerned developers of the change of repository
• I have ported e2e tests
• I have ported pre-commit hooks including eslint
• I have ported i18n
• I have checked that build scripts are up to date with WordPress-iOS
• I have checked that build scripts are up to date with WordPress-Android
• I have made sure that the project can be opened in Android Studio
• I have made sure that the project can be opened in XCode
• I have made sure that the demo app for mobile runs
• I have made sure that I have excluded any binary files, jar, phar... from the patch (gutenberg-mobile has gradle-wrapper.jar committed to the repo though and we might want to fix that later?)

[gziolo]

I love it ❤️

How can I help to merge it? Will we have to split it into more PRs? Do you need my review now or is it mostly an experiment?

[Tug]

How can I help to merge it?

I'm thinking test and report bugs and other problems!

Also there is going to be a lot of work needed around integrating the new packages with the current ones in terms of scripts, build, lint checks, doc gen, package release... obviously we cannot do everything at once but I expect this PR not to break anything either on the web or the mobile side.

Will we have to split it into more PRs?

I'd like to but I'm not sure how at this point, most added files depend on each others at the moment... ideas are welcomed here 👍

Do you need my review now or is it mostly an experiment?

It's mostly an experiment at this point, but hopefully it could turn into a real proposal!
I'm still experiencing some issues with the build but yeah would be awesome to have your feedback (I can ping you if you want when it's a bit more stable ;))

[gziolo]

Let's close in favor of #17950 which is more up to date. It looks like it follows the same approach.