Activity Facade

[stevebauman]

Description

This PR adds a new Activity facade for those who prefer it to global helpers.

There's existing facades for other utilities in this library already so it feels out of place that there isn't one already for creating an actual activity.

Usage

All the typical methods can be used as you'd expect:

use Spatie\Activitylog\Facades\Activity;

Activity::on($team)
   ->causedBy($user)
   ->event('sent-invitation')
   ->withProperties(['email' => '[email protected]'])
   ->log('User sent an invitation to an email address.');

Let me know your thoughts!

[freekmurze]

Thanks!