Typography tools: make it possible to customize paragraph spacing and indent

[beafialho]

In the context of style variations (Related: #40988 and #35619), considering elements that can vary between them, it would be nice to have a way to customize paragraph spacing and indent in the editor, as they can be a differentiator element between variations.

spacing_indent.mp4

[mtias]

I think we have this covered in #37462.

[beafialho]

Closing as it's duplicated.