Implement method to disable deletion check

[ultrono]

Implement method to disable deletion checks, i.e. so the result of isDeletable() is always true and any checks within isDeletable() are skipped. The API would look something along the lines of: the following.

A user may have a "deletable" restriction:

namespace App;

use F9Web\LaravelDeletable\Traits\RestrictsDeletion;
use Illuminate\Database\Eloquent\Model;

class User extends Model
{
  use RestrictsDeletion;
  
  public function isDeletable() : bool
  {
    return $this->orders()->doesntExist();
  }  
}

Assuming the user had orders, the following would fail and the model would not be deleted:

$user->delete();

The following would allow the deletable check to be skipped and the model would be deleted:

$user->withoutDeletableRestrictions()->delete()