Add a boolean parameter to the doNotMonitor function

[bilfeldt]

Laravel offers a conditional when function to be used for conditional registration of scheduled commands. This function accepts a closure or a boolean and that closure will be invoked every time the scheduler is running.

This conditional function can be very useful for enabling/disabling scheduled jobs via config like so:

$schedule->command('foo:bar')
    ->dailyAt('22:15')
    ->when(config('scheduled-jobs.foo-bar'));

Now it is not possible for this monitor to invoke the same closure on every scheduled job, because the system needs to know when to expect a run. But wouldn't it be nice if the same config could be used to set whether or not the command should be monitored? You can do that now with this PR 🥳

$schedule->command('foo:bar')
    ->dailyAt('22:15')
    ->when(config('scheduled-jobs.foo-bar'))
    ->doNotMonitor(! config('scheduled-jobs.foo-bar'));

[freekmurze]

Thanks!