Improve AB styling capabilities v2 - Migrate more styles

What is in this MR

In this MR I've migrated all remaing styles from existing element. This migration implied a few things such as:

• Add a formula to set the table "show more" button label
• Add the link and image theme config block to customize these base components
• Add all heading values to Heading theme config block
• Add ABParagraph component
• Switch ABComponent to use CSS variables instead of classes
• Remove and migrate the old element based properties

How to test this MR

• Create a page with all elements except Iframe, column and form elements.
• Try to style all these elements
• Open the theme panel and play with styles
• Then test the migration:
  • switch to develop and restart wipe
  • create all those elements from the first point and set some values for the old style properties
  • switch to this branch and apply the migrations
  • All style should have been migrated

Merge Request Checklist

• A changelog entry has been created if required.
• New/updated Premium/Enterprise features are separated correctly in the premium or enterprise folder
• The latest Chrome and Firefox have been used to test any new frontend features
• Documentation has been updated
• Quality Standards are met
• Performance: tables are still fast with 100k+ rows, 100+ field tables
• The redoc API pages have been updated for any REST API changes
• Our custom API docs are updated for changes to endpoints accessed via api tokens
• The UI/UX has been updated following UI Style Guide

Closes #2388 (closed)