Feature request: provisional notifications for iOS

[avnerh1]

Hi,
It would be very helpful to take advantage of iOS' provisional notification authorization. This allows skipping the permission pop-up for low-priority local notifications.

To request provisional authorization, add the provisional option when requesting permission to send notifications.

let center = UNUserNotificationCenter.current()
center.requestAuthorization(options: [.alert, .sound, .badge, .provisional]) { granted, error in
    
    if let error = error {
        // Handle the error here.
    }
    
    // Provisional authorization granted.
}

Thanks for the diligent work.