Is your feature request related to a problem? Please describe.
Many of my notes are related to Whiteboards created via nextcloud. Currently I'd have to use the whiteboard's link to then open it in separate tabs.

Describe the solution you'd like
A / command to embed and link to Nextcloud Whiteboard, which shows them as an iframe with an option to edit it in fullscreen - similar to how Docmost allows embedding Excalidraw dashboards.