Scheduler: Make background tasks and Task Output options usable with $schedule->job()

[connecteev]

When scheduling commands, the runInBackground method may only be used when scheduling tasks via the command and exec methods.
https://laravel.com/docs/master/scheduling#background-tasks

Also, the emailOutputTo, emailOutputOnFailure, sendOutputTo, and appendOutputTo methods are exclusive to the command and exec methods.
https://laravel.com/docs/master/scheduling#task-output

It would be really nice if these could be used with queue-able jobs:
$schedule->job(...)