feat: integrasi notifikasi backend dengan frontend

src/types/notification.types.ts

@@ -0,0 +1,19 @@
+export interface BackendNotification {
+  id: number;
+  id_user: number | null;
+  id_admin: number | null;
+  title: string;
+  message: string;
+  is_read: boolean;
+  created_at: string;
+}
+
+export interface UINotification {
+  id: number;
+  type: string; // "new-task" | "achievement" | "system"
+  title: string;
+  time: string;
+  isNew: boolean;
+  group: "TODAY" | "YESTERDAY";
+  description: string;
+}