Exclude empty directories

[maltokyo]

As a feature request, it would be great if this script didn't create albums for directories with no images or movies in it (i.e. create album only if there is something to put in the album)

[alvistar]

Empty directories is one thing, but there is also directory that can contain .hidden_files and files that are not images.

To do a clean thing needs to exclude all non pictures extension. And I am not sure without looking into Immich code we should I need to exclude.