Tray icon not showing on pop os

[freesig]

The tray icon is not displaying on popOS 19.10

Steps to reproduce

1. Run holoscape with npm i && npm start.
2. Holoscape pop up asking which sim2h.
3. Holoscape run successfully

Result

There's no tray icon so I can't actually use it.

I tried sudo apt install libappindicator-dev but that didn't work.

[freesig]

This fixes it. Maybe we should document it?
https://pop.system76.com/docs/status-icons/

[zippy]

Yes, that'sthe instructions I used to fix it too. I think we should document but also probably need some other non system tray menu option too.