feat(cms): implement multi-language support across frontend and admin UI

apps/spa/src/utils/localization.ts

@@ -0,0 +1,21 @@
+export function getLocalizedField(field: any, currentLang: string): string {
+  if (field === null || field === undefined) {
+    return '';
+  }
+  if (typeof field === 'string') {
+    return field;
+  }
+  if (typeof field === 'object') {
+    if (field[currentLang] !== undefined) {
+      return field[currentLang];
+    }
+    if (field['en'] !== undefined) {
+      return field['en'];
+    }
+    const keys = Object.keys(field);
+    if (keys.length > 0) {
+      return field[keys[0]];
+    }
+  }
+  return String(field);
+}