Heads up: Sorani language codes restructured

Hi. Just a quick message. Previously you localised Sorani in ckb-arab, and there were also ckb-latn, which no one worked on and ckb, which was blocked from working on, as that fell back to ckb-arab.

Now things have been simplified and only language code 'ckb' is left for Sorani, in only the Arabic script. So please change your language preference to ckb and continue doing what you did. Please let us know at Support if anything smells fishy.