Language indicator and filter

[blubleublue]

Delete this thread, if already requested or implemented or solved by a plugin, which I cannot find. 

User stories:

1. As a child with poor progress in English at school I want to see (only) content in my first language, so that I can quickly find what I want to watch without having to ask Jellyfin admins / content curators
   
2. As a father (Jellyfin admin) I want to be able to assign languages to other users (kids), so that the frontend can be filtered accordingly 
   
3. As any user I want to be able to filter content (by language)
   

Features:

• flanguage ilters in frontend
  
• language preference assignment in backend for users / by users
  
• language flag icons (emojies ?) on movie posters, titles, ... not hard rendered
  

Any idea if that would be feasible? Or is there even some (hopefully not so hacky) solution out there?