Support class resolver for open storage

[parallels999]

For config cache,
Wouldn't it be better to be able to use a resolver by class name instead of a callback method?
So, on storage.open we can set a string class name, where is a resolve method
Or in DEBUGBAR_OPEN_STORAGE we just can set the fqn of the class

[barryvdh]

Can't this be done in the callback? This doesn't seem like a convention of Laravel?

[parallels999]

Can't this be done in the callback?

laravel-debugbar/src/Controllers/OpenHandlerController.php

Lines 21 to 25 in 7746529

	$open = config('debugbar.storage.open');
	if (is_callable($open)) {
	return call_user_func($open, [$request]);
	}

yes, but the problem is that if you set a closure on config, then you can't cache that config, because closure is not serializable ('debugbar.storage.open')