Support full screen rich text editing

[Xtron33]

Description

Add to Rich Text editor field the ability to open editor on full screen like modal.

It be really usefull for places with huge text or if editor have a lot of plugins.

We make something like this in our old project with old version where no rich text editor by default.

Proposals

Proposal 1

Add to richtext field option for enable full screen mode button.

Proposal 2

Add button for enabling full screen mode (Open editor in modal)