Show status in the task bar

[grampelberg]

With watch running in the background, it is hard to know what's happening. Surface status to a task bar menu. ex. https://github.com/cratonica/trayhost

Icon

• Files being uploaded
• Run starting up

Menu

• get output
• doctor output

[timfallmk]

And notifications! https://developer.apple.com/notifications/ https://developer.apple.com/documentation/notificationcenter