chore(i18n): catch missing translations to file

[krzysztof-kwitt]

Hello,

I noticed that several translations were missing, so I added automatic saving of missing translations to the file to make it easier to notice missing ones.

Best regards,

[nurikk]

We already have piece of logic that catches missing translations and prints them into browser console. Additionally we have a script to import all possible translations from z2m. This PR looks a bit overkill in changes to add extra layer of functionality to get this missing translation keys