We need a way to configure and extend the used wysiwyg editor.

This includes the possibility to have additional buttons with custom behaviour.

A) upload images (or other assets) from the local hard drive

B) add configured html fragments, e.g. like a

quote

C) add complex html fragments. E.g. the button might trigger a custom form in a modal that you can use to search for existing assets (like images, or other content). You may add items and they'll be rendered (and e.g. movable, changeable, etc.) in the wysiwyg preview.

Is there any option to extend the React WYSIWYG Editor to accomplish these things?

Since I didn't find documentation for these, I thought, I'd at least ask about plans for extensions like these.