[9.x] Adds isDirectoryEmpty() and isDirectoryNotEmpty() to Filesystem

[DarkGhostHunter]

What?

Allows to check if a directory has files/directories or not. Even hidden ones.

use Illuminate\Support\Facades\File;

if (File::isDirectoryEmpty('john/photos')) {
    return 'You do not have any photos';
}

if (File::isDirectoryNotEmpty('john/videos', true)) {
    return 'You may have one or more videos, even hidden ones.';
}

BC?

Nope, just adding methods.

[johanrosenson]

Your examples are confusing, your returned strings doesn't match what you expect should happen.

[DarkGhostHunter]

Your examples are confusing, your returned strings doesn't match what you expect should happen.

Fixed.