Add support to multiple accounts (tailscale profiles)

[sydro]

This fixes issue #13 (Enchancement: Support for multiple accounts)

I added a submenu after "settings" with tailscale profiles list. OnClick event switches to selected profile.

[Tweekism]

Ooh profile / tailnet switching is probably the only thing I'd ever use. At the moment I'm using bash aliases to switch between home and work. I'll test this out and let you know how I go.

[Tweekism]

So tested and working, I did need to set --operator=$USER on both tailnets to swap back and forth.

I'm missing these icons that indicate which tailnet I am on:-

In your screensot it looks like a green tick, but perhaps it should be a simple symbolic tick like in the "Power Mode" setting?

Also would be nice if there was some indication that is was doing something while the switch is happening, perhaps by changing the top icon in the status bar?

[Tweekism]

Ticks now show up, but they show up on both for some reason? Maybe because they are both tied to the same email account?

I can send you a sanitised version of the json file if that would help.

[sydro]

Ticks now show up, but they show up on both for some reason? Maybe because they are both tied to the same email account?

I fixed selected user profile check, now the icon should come out on the correct profile

[Tweekism]

Yep that fixed it.