Broken in dec7fb9030
VPN was lost when app was sent to background. Current (and active)
profile was persisted with nil isActive and instead of ignoring
profile activation, isActive was falling back to
allHeaders.isEmpty (false), erroneously deactivating the profile
and disconnecting the VPN.
Use bundle as a means to provide Mac APIs to Catalyst app.
In order to cross the @objc wall set by the Mac Bundle mechanism,
Swift structures cannot be used directly and must be bridged
through ObjC facades.
Create NSMenu in MVVM style and install it on app launch. Make
sure to do it in AppDelegate.applicationDidFinishLaunching(),
because doing it as early as in PassepartoutApp.init() would
crash Mac code.
Use .representedObject to own view models.
With menu in place, app can be sent to background when main window
is closed. Requires multiple documents support for app not to die
instantly.