Add granular controls for mobile push notifications

Would like the ability to choose which types of mobile push notifications they receive from Hospitable. Currently, mobile push alerts can be sent for incoming guest messages, booking-related activity, and other inbox events, but there is no in-app setting to filter these by notification type.

The specific request is to allow hosts to receive push notifications only when a guest sends a message that needs a reply, while disabling alerts for new bookings, accepted bookings, booking status updates, or other inbox activity.

This would be especially helpful for hosts with multiple properties who receive a high volume of notifications but still want to be alerted when a guest needs their attention.