Feature: add Korean language (#7573)

src-ui/src/app/app.module.ts

@@ -347,6 +347,7 @@ import localeFr from '@angular/common/locales/fr'
 import localeHu from '@angular/common/locales/hu'
 import localeIt from '@angular/common/locales/it'
 import localeJa from '@angular/common/locales/ja'
+import localeKo from '@angular/common/locales/ko'
 import localeLb from '@angular/common/locales/lb'
 import localeNl from '@angular/common/locales/nl'
 import localeNo from '@angular/common/locales/no'
@@ -378,6 +379,7 @@ registerLocaleData(localeFr)
 registerLocaleData(localeHu)
 registerLocaleData(localeIt)
 registerLocaleData(localeJa)
+registerLocaleData(localeKo)
 registerLocaleData(localeLb)
 registerLocaleData(localeNl)
 registerLocaleData(localeNo)

src-ui/src/app/services/settings.service.ts

@@ -143,6 +143,12 @@ const LANGUAGE_OPTIONS = [
     englishName: 'Japanese',
     dateInputFormat: 'yyyy/mm/dd',
   },
+  {
+    code: 'ko-kr',
+    name: $localize`Korean`,
+    englishName: 'Korean',
+    dateInputFormat: 'yyyy-mm-dd',
+  },
   {
     code: 'lb-lu',
     name: $localize`Luxembourgish`,