added notification type

frontend/types/global.d.ts

@@ -287,4 +287,12 @@ declare global {
             status_detail: string | null;
         };
     };
+
+    type Notification = {
+        title: string;
+        content: string;
+        created_at: string;
+        notif_type: "NEWS" | "USER_NOTIF";
+        is_read?: string;
+    };
 }