make the domain and data layers

lib/features/booking_system/data/booking_dummy_source.dart

@@ -0,0 +1,32 @@
+import 'package:syncrow_app/features/booking_system/domain/booking_model.dart';
+import 'package:syncrow_app/features/booking_system/domain/booking_service.dart';
+
+class BookingDummySource implements BookingService {
+  @override
+  Future<List<BookingModel>> get() async {
+    await Future.delayed(Duration(seconds: 2));
+    return [
+      BookingModel(
+        uuid: 'uuid1',
+        roomName: 'roomName1',
+        date: 'wed 28th May 2025',
+        timeSlot: '10:30 AM - 11:30 AM',
+        cost: 4,
+      ),
+      BookingModel(
+        uuid: 'uuid2',
+        roomName: 'roomName2',
+        date: 'wed 28th May 2025',
+        timeSlot: '10:30 AM - 11:30 AM',
+        cost: 6,
+      ),
+      BookingModel(
+        uuid: 'uuid3',
+        roomName: 'roomName3',
+        date: 'thur 2th june 2025',
+        timeSlot: '10:30 AM - 1:30 PM',
+        cost: 10,
+      )
+    ];
+  }
+}