New translation

[stokito]

It's not finished yet but it should be useful even in this form.

[stokito]

Hi @newhinton I found a time to complete the translation. It's still far not ideal but that for sure enough for my father to use it :)

Please merge it before new merge conflicts occur.

[stokito]

Also please note that you have a broken Weblate setup
https://hosted.weblate.org/projects/round-sync/round-sync

The translation is temporarily closed for contributions due to maintenance, please come back later.
The translation was automatically locked due to following alerts: Could not merge the repository.

This happens when some translations were made there but not merged yet and the code was changed.
So please merge the translations. I also did some translations there a year ago but you may ignore them and overwrite with this changes. For other languages like tr and zh it may be need to make a diff between translations and merge all missing.

@newhinton this is important and really stops the RoundSync from mass usage.