"Localized in your language" misses lots of localizations

Hi,

I was wondering how to make my app (GNU FreeDink) display that it was localized in several languages (https://translationproject.org/domain/dink.html).

After checking the code (in gnome-software and appstream-glib), it seems the only way to lighten that icon is to add a "language pack" metadata for each supported language as described in: https://www.freedesktop.org/software/appstream/docs/sect-Metadata-Localization.html

It sounds overkill to generate one "language pack" metadata file per translated language, especially when it's just to reference the gettext .mo files that are included in the main package.

Did I miss something?