First export from translatewiki.net with https://gerrit.wikimedia.org/r/c/mediawiki/core/+/1100353
[ ] Verify autonym correctness in language-data
[ ] Add to Wikifunctions's language list in function-schemata
[ ] Add to `includes/languages/data/Names.php`
[ ] Add to RELEASE-NOTES
[ ] Add namespace translations ([[ https://translatewiki.net/wiki/User_talk:Bloomaround#Namespaces | asked ]])
-- [ ] Add gender aliases if needed
-- [ ] Check that namespace translations don't conflict with language codes
[ ] Add $linkTrail
[ ] Add date formats (if needed)
[ ] Add digit conversion (if needed)
[ ] Remove from translatewiki after deploying the core change
-- [ ] `mw-config/LanguageSettings.php`
-- [ ] `mw-config/FallbackSettings.php`
[ ] Test language search in UniversalLanguageSelector and fix the search index (if needed)