[feature]: Mindmaps

[MarkGStacey]

1~3 main use cases of the proposed feature

1: Mindmaps as an editable, shareable, web based solution are very useful for knowledge bases - MindManaget by Coral is the best functional version but no mobile access, and web based access to mind maps is the only reason I use Miro 2: showing a knowledge graph of linked blocks is a great way to explore a larger knowledge base

Ideas for solution

1: Add an editable mind map 2: display a mind map of existing content

what types of users can benefit from using your proposed feature

All knowledge workers

Additional context

No response

[alt1o]

Mindmaps is very useful in many scenes. We will implement this function.

[houjoe0829]

Related with https://github.com/toeverything/blocksuite/issues/2941

[himself65]

See https://github.com/toeverything/blocksuite/issues/2941