Add Kurdish language

[Revan99]

I added Kurdish CKB (Central Kurdish Branch)

[Revan99]

@kossnocorp can you check this one out?

[kossnocorp]

@Revan99 sure, I'll review it when I have time

[fturmel]

@Revan99 Do you need help converting this PR to be compatible with date-fns v3? There has been a few changes, mainly export/import and new Prettier rules. LMK. Once this is done, you can run npm run locale-snapshots to generate a proper snapshot.md file for the locale, and review it to validate the parser/formatter behavior.

I don't have first hand experience with this language, but did a bit of research and I think the right identifier for this locale would be ckb-IQ or ckb (IQ is the default region). ckb is a subset of kur and the identifier is supposed to be language-REGION, so ku-CKB is probably not right. The JSDocs in the index file could be updated to better identify the locale language and region as well.

https://en.wikipedia.org/wiki/Kurdish_languages
https://en.wikipedia.org/wiki/Sorani
https://icu4c-demos.unicode.org/icu-bin/locexp?_=ckb_IQ

[Revan99]

thank you @fturmel, I'll try to make it compatible with the new version and fix the other issues as well, and if I needed anything I'll let you know.
thanks again.

[kossnocorp]

@fturmel thank you for offering help and doing the research. I think the ckb is the right code and we can drop the region code as both (IQ and IRQ) represent the same country - Iraq.

[kossnocorp]

Thank you so much!

[kossnocorp]

Shipped with date-fns@3.4.0