add FCS UI

lib/domain/entities/processing.dart

@@ -0,0 +1,36 @@
+import 'package:fcs/domain/entities/package.dart';
+
+class Processing {
+  String id;
+  //for consignee
+  String userID;
+  String userName;
+  String userPhoneNumber;
+  //for shipper
+  String fcsID;
+  String shipperName;
+  String shipperPhoneNumber;
+
+  List<Package> packages;
+
+  Processing(
+      {this.id,
+      this.userID,
+      this.userName,
+      this.userPhoneNumber,
+      this.fcsID,
+      this.shipperName,
+      this.shipperPhoneNumber,
+      this.packages});
+
+  @override
+  bool operator ==(Object other) => other is Processing && other.id == id;
+
+  @override
+  int get hashCode => id.hashCode;
+
+  @override
+  String toString() {
+    return 'Processing{id: $id}';
+  }
+}