[9.x] Added full callable support to schedule:list

[korkoshko]

For more details, see #42380

Supported keys:

1. $schedule->call(new SomeScheduleTask())->everyMinute();
2. $schedule->call([new SomeScheduleTask(), 'callback'])->everyMinute();

Output example:

  * * * * *  Closure at: App\Console\SomeScheduleTask::__invoke ........................ Next Due: 24 seconds from now
  * * * * *  Closure at: App\Console\SomeScheduleTask::callback ........................ Next Due: 24 seconds from now