Automatically update language files for new strings

[Mte90]

As example the italian localization stopped with updates 2 years ago but there are new strings but the JSON files aren't updated.
It will be helpful something that automatically fill with the new content the language files so for a localizers is more easy to work on that task.

[bdefore]

following up on our discord discussion: the path i'd like to take here is to have an automation that whenever an english localization string is added, to add those keys to all other locale files, with empty values, and to update the yarn compare script to anticipate empty strings as needing translation.