[FR] Nested templates

[Wallby]

Description

If I currently in a template create a database, whether inline or on a new page, that database is not a template, but shared among all pages instantiated from the template.

An example structure would be the pages:

Projects
* Board

Where each entry in Board contains multiple databases:

Project
* Board
* Docs

Impact

Project management with more than one board.

Additional Context

No response