Add drowl_paragraphs_styles_ui complex style selector as classes ui

@thomas.frobieter: This should be more or less ready! :)

I didn't test it, as setting it up in this state wouldn't make much sense, so please first finish the implementation and then let's have a look again together.

Important to consider:
- [ ] Add css and make it scoped on the widget
- [ ] JS:
Update the JS with your latest code, but only within the START - END.
Note that the functions are internal due to the nesting. If they can not be called, please contact me to rewrite the syntax.
styles has been renamed consistently to styleDefinitions, but please check the console.log first, if it's correctly passed from PHP
The classes-field query selector must be relative to the UI initialized and the UI must be scoped for each paragraph settings form, as of course it should work with * paragraph settings forms opened.
- [ ] PHP:

• Define all default styles provided by the module in drowl_paragraphs_styles_ui.module
• The iconPath needs to be provided absolute. See .api.php for examples, when implementing a hook in your theme. But be careful, it's also untested yet!

thomas.frobieter → made their first commit to this issue’s fork.

Merged! :)
Nice work @thomas.frobieter!

Automatically closed - issue fixed for 2 weeks with no activity.