* Add missing `@since` tags.
* Update some DocBlocks per the documentation standards.
* Rename test files and classes per the naming conventions.
* Fix some code alignment issues reported by WPCS.
Follow-up to [50959], [50960].
See #52991, #53175.
Built from https://develop.svn.wordpress.org/trunk@50967
git-svn-id: http://core.svn.wordpress.org/trunk@50576 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This is the first piece of landing the theme.json processing in WordPress core.
It allows themes to configure the different editor settings, allow cusomizations and define presets in theme.json file.
Props jorgefilipecosta, nosolosw.
See #53175.
Built from https://develop.svn.wordpress.org/trunk@50959
git-svn-id: http://core.svn.wordpress.org/trunk@50568 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Sergey Biryukov
youknowriad