insert invoice pages

lib/vo/invoice.dart

@@ -0,0 +1,24 @@
+import 'package.dart';
+
+class Invoice {
+  String invoiceNumber;
+  DateTime invoiceDate;
+  String customerName;
+  String customerPhoneNumber;
+  double amount;
+  String discount;
+  String status;
+  String paymentAttachment;
+
+  List<Package> packages;
+  Invoice(
+      {this.invoiceNumber,
+      this.invoiceDate,
+      this.customerName,
+      this.customerPhoneNumber,
+      this.amount,
+      this.discount,
+      this.status,
+      this.paymentAttachment,
+      this.packages});
+}

lib/vo/package.dart

@@ -12,6 +12,7 @@ class Package {
 
   int rate;
   int weight;
+  int amount;
   String packageType;
   String pickUpID;
   List<String> photos;
@@ -34,6 +35,7 @@ class Package {
       this.boxNumber,
       this.rate,
       this.weight,
+      this.amount,
       this.packageType,
       this.pickUpID,
       this.remark,