[Feature Request] Integrate Nextcloud/deck into Mindmap

[Mannshoch]

Mindmap should be able to represent a https://github.com/nextcloud/deck board and edit it.

[sunjam]

Apparently the Deck app has a specific design that might be tricky to mindmap.

[Mannshoch]

May as an Idea for the hierarchy problem.

If A mindmap has more levels than Kanban allow I would add these additional data as Markdown bullet list into a card description.
Board > Stack > Card > [ ] Option > [] Option
kind of:

1. Board
   1. Deck
      1. Card
          [ ] Level three
             [ ] Level four

(I use Markdown in OpenTask that's a nice tool for shopping lists and it let me show entries also in a nice and easy way in other Calendar Application)