Better Multiuser support?

Hey!

First of all thanks for this awesome project!

I checked out pushjet but they make people buy their App (i would, but i dont have Google in my phone 🙄)... So gotify comes in handy and i really like it.

I made an application for my smart home that can send me notifications for smoke or water detectors.
I'd like to have my wife also receive those.
The only possible way right now seems to use one user /account on both devices.

However i'd like to not bother my wife with my Servers status....

I suggest
- to make it possible to share applications/tokens among multiple users
- to make notifications possible that each user can / has to Mark read / seen for him/herself

Or is it possible already somehow?

Maybe that is something that can be combined with the multiserver feature someone asked for.

Thanks!