Requested at https://translatewiki.net/w/i.php?title=Support&oldid=13013274
[X] Add to language-data([[https://github.com/wikimedia/language-data/pull/427 | patch]])
-- [X] Run `src/util/ulsdata2json.php` before adding
-- [X] Run `src/util/ulsdata2json.php` after adding
[X] Add to translatewiki configuration([[https://gerrit.wikimedia.org/r/c/translatewiki/+/1142622 | patch]])
[ ] Deploy configuration to translatewiki
[ ] Add an entry to LocalNames/LocalNamesEn.php in the CLDR extension (if needed)
[X] Update jquery.uls and jquery.ime in the ULS extension([[https://github.com/wikimedia/jquery.uls/commit/388bf5b32ab96bcb3879dfc09c2c6f43698417e8 | patch]])
[ ] Deploy ULS to translatewiki
[ ] Create the translatewiki language portal
[ ] Make sure that the category for the language is not marked as disabled
[ ] Update the translatewiki language portal to indicate that the language is enabled
[ ] Add the requester (and possibly other relevant users) to the translators list on the portal
[ ] Enter the autonym in the Wikimedia Portals project
[ ] Test language search in UniversalLanguageSelector and fix the search index (if needed)