feat : Posts in Event Details

lib/ui/views/event_details/event_details_viewmodel.dart

@@ -10,3 +10,15 @@ class EventDetailsViewModel extends BaseViewModel {
     notifyListeners();
   }
 }
+
+class Post {
+  final String id;
+  final String title;
+  final String content;
+
+  Post({
+    required this.id,
+    required this.title,
+    required this.content,
+  });
+}