- registry file /windows/tailscale.reg is generated, filling in the
associated control server URL
- also includes CLI instructions
- fix /apple incorrect template: 'Url' is supposed to be '.URL'
This code adds new http handlers that will generate iOS and macOS
configuration profiles allowing us to override the Control server of the
official Tailscale.app.
Currently, macOS is working, as I have not found the correct "key" to
inject for iOS.
This means that a profile will allow users to no longer log in via the
command line, but they can use the app.