The ability for the blockgroup element to collapse/expand.

[Inaztm]

Is your feature request related to a problem? Please describe.
Currently, the blockgroup element does not collapse/expand, which is inconvenient.

Describe the solution you'd like
Adding a simple floating button on the right side of the editor (just a button for mobile) would immediately solve the problem of long text and serve as an alternative to adding “nested blocks” in a custom block ({ content: 'block+' }).
This functionality can be made available in a parameter { toggleBlocksVisibility: { enabled: true } }.

Describe alternatives you've considered
Make custom tiptap extension or use pure tiptap with custom extension

Additional context

Bonus
[ ] I'm a sponsor and would appreciate if you could look into this sooner than later 💖