Feature request: sort the new Mullvad exit nodes per country

[dr460nf1r3]

The newly added Mullvad exit nodes allow a regular VPN with Tailscale.
Since there are a LOT of exit nodes to choose from, it currently fills the whole screen with exit nodes and doesn't display all of them due to this behavior.

It would be nice to have those nodes sorted per country so that it would look like
Network devices -> my devices -> own nodes -> device xy
Network devices -> my devices -> Mullvad nodes -> DE -> device de-xy*

This would allow operating the Mullvad nodes via tailscale-systray.