whiteboard (excalidraw-backend) missing

[eserv]

https://github.com/jitsi/excalidraw-backend

[jdaviescoates]

@eserv would be great to have this!

But looks like perhaps it's a plugin or something?

I also note from https://plus.excalidraw.com/excalidraw-plus-vs-excalidraw that the properly open source version of excalidraw doesn't have collaborative editing, so I wonder how this Jitsi exalidraw extention is getting around that?

Also, fyi afaik we're a few version behind with Jitsi atm becaus @nebulon has been struggling to get the latest version to work, I think.