feat: add Korean language to UI components

- Add Korean (한국어) to footer language list
- Add Korean option to account settings language selector
- Add ko and ko-KR to locales array for date/number formatting

apps/client/src/app/components/footer/footer.component.html

@@ -148,6 +148,9 @@
         <li>
           <a href="../pt" title="Ghostfolio in Português">Português</a>
         </li>
+        <li>
+          <a href="../ko" title="Ghostfolio in 한국어">한국어</a>
+        </li>
         <li>
           <a href="../tr" title="Ghostfolio in Türkçe">Türkçe</a>
         </li>

apps/client/src/app/components/user-account-settings/user-account-settings.component.ts

@@ -89,6 +89,8 @@ export class GfUserAccountSettingsComponent implements OnDestroy, OnInit {
     'es',
     'fr',
     'it',
+    'ko',
+    'ko-KR',
     'nl',
     'pl',
     'pt',

apps/client/src/app/components/user-account-settings/user-account-settings.html

@@ -102,6 +102,10 @@
                     >Italiano (<ng-container i18n>Community</ng-container
                     >)</mat-option
                   >
+                  <mat-option value="ko"
+                    >한국어 (<ng-container i18n>Community</ng-container
+                    >)</mat-option
+                  >
                   <mat-option value="nl"
                     >Nederlands (<ng-container i18n>Community</ng-container
                     >)</mat-option