Allow adding more than 1 action button to each Notification

[ziming]

Allow adding more than 1 action button to Notifications would be great feature to have, like a 'View' button & a 'Call' button

I would imagine a new chainable method called actions() that accepts an array of NovaNotificationAction objects

[crynobone]

Feel free to add your own Notification class and vue component responding to above requirements.