I saw something about translations on the Nethserver 8 trello todo list.
And i recently came accross this tool.
Maybe you can check it out and see if it can be of use. Weblate features
on github here: WeblateOrg/weblate: Web based localization tool with tight version control integration. (github.com)
I have seen coolify use it for translations, not really sure how it works, but maybe it can be of help to nethserver developers