Add kabyle language to Mastodon (#12962)

* Add kabyle language to settings_helper

* Adding kabyle language to application.rb

app/helpers/settings_helper.rb

@@ -36,6 +36,7 @@ module SettingsHelper
     it: 'Italiano',
     ja: '日本語',
     ka: 'ქართული',
+    kab: 'Taqbaylit',
     kk: 'Қазақша',
     kn: 'ಕನ್ನಡ',
     ko: '한국어',

config/application.rb

@@ -73,6 +73,7 @@ module Mastodon
       :it,
       :ja,
       :ka,
+      :kab,
       :kk,
       :kn,
       :ko,