feat(locale): add Kazakh language (#3875)

src/runtime/locale/index.ts

@@ -22,6 +22,7 @@ export { default as id } from './id'
 export { default as it } from './it'
 export { default as ja } from './ja'
 export { default as km } from './km'
+export { default as kk } from './kk'
 export { default as ko } from './ko'
 export { default as nb_no } from './nb_no'
 export { default as nl } from './nl'