✅ Deploy Preview for plone-components canceled.

@stevepiercy I realized the deprecation docs for this already existed, I added a couple extra files I cleaned up.

FYI: this PR also reduces the main client bundle size by almost 30kb gzipped! Just by removing the imports from barrel files!

Out of curiosity, did you do all this manually or with a tool that finds barrel imports and replaces them? This is a huge amount of changes!

@stevepiercy All manually :) I figured that I would have had a lot of 30 to 60 minutes slots during the conf sprint, the following day, the flights and the long layovers, so this task would have been a good fit

Needs an ESLint fix, then should be good to merge.

@pnicolli now should be green, let's merge it and release it.
Thanks for taking care, it rocks!

@pnicolli just realised of something:
if we leave the ESlint rules "on" by default, they will break all projects outside, so we cannot enable it by default in 18.
:/ MEH!

@sneridagh @pnicolli Are we merging this for Volto 18 or 19? If it's for 18, it's a bit late (we already made non-alpha releases and this is breaking). If it's for 19, fine, but then we need to cut an 18.x branch and start using main for 19.

@sneridagh @pnicolli Oh sorry, now that I actually read the PLIP, I understand that this is fixing the imports in Volto core but not actually removing the barrels yet. Okay!

I found another barrel file that I didn't see in the first iteration, I worked on it last night, will finish asap.
It is @plone/volto-slate/editor/ui

@davisagli yes, we realised that the work of moving all the imports to direct imports is fine and non-breaking. This will also enable right now multi-framework add-ons :)

Ok added the last small commit, now I think it's good to go @sneridagh