[11.x] Add forceDestroy to SoftDeletes

[jasonmccreary]

When working with a soft deleted model the other day, I reached for forceDestroy but it wasn't there. I thought this might be a good addition to the SoftDeletes trait.

Before

$comment = Comment::find(1);
$comment->forceDelete();

After

Comment::forceDestroy(1);

Similar to Model::destroy(), you may also pass forceDestroy an array or collection of ids, as well as an Eloquent collection of models to force destroy.