attendence records, extra hours , rewards and punishment funnctionality have been added

lib/domain/models/overtime_model.dart

@@ -0,0 +1,16 @@
+import 'finance_record.dart';
+
+class OvertimeModel extends FinanceRecord {
+  final double hours;
+  final double hourlyRateAtTheTime;
+  final double totalAmount;
+
+  OvertimeModel({
+    required super.id,
+    required super.employeeId,
+    super.date,
+    required this.hours,
+    required this.hourlyRateAtTheTime,
+    required this.totalAmount,
+  });
+}