add pagination for invoice and update ui for material 3

lib/pages/invoice/invoice_customer_list.dart

@@ -3,7 +3,7 @@ import 'package:fcs/domain/entities/user.dart';
 import 'package:fcs/helpers/theme.dart';
 import 'package:fcs/pages/customer/model/customer_model.dart';
 import 'package:fcs/pages/invoice/editor/invoice_editor.dart';
-import 'package:fcs/pages/widgets/local_text.dart';
+import 'package:fcs/pages/widgets/local_app_bar.dart';
 import 'package:fcs/pages/widgets/progress.dart';
 import 'package:flutter/cupertino.dart';
 import 'package:flutter/material.dart';
@@ -44,20 +44,7 @@ class _InvoiceCustomerListState extends State<InvoiceCustomerList> {
     return LocalProgress(
       inAsyncCall: _isLoading,
       child: Scaffold(
-        appBar: AppBar(
-          centerTitle: true,
-          leading: new IconButton(
-            icon: new Icon(CupertinoIcons.back),
-            onPressed: () => Navigator.of(context).pop(),
-          ),
-          backgroundColor: primaryColor,
-          title: LocalText(
-            context,
-            "customer.list.title",
-            fontSize: 20,
-            color: Colors.white,
-          ),
-        ),
+        appBar: LocalAppBar(labelKey: 'customer.list.title'),
         body: Column(
           crossAxisAlignment: CrossAxisAlignment.end,
           children: [
@@ -83,12 +70,10 @@ class _InvoiceCustomerListState extends State<InvoiceCustomerList> {
   Widget _item(User customer) {
     return InkWell(
       onTap: () async {
-        bool created = await Navigator.of(context).push(CupertinoPageRoute(
+        bool? created = await Navigator.of(context).push(CupertinoPageRoute(
             builder: (context) => InvoiceEditor(
-                  customer: customer,
-                  fcsShipment: widget.fcsShipment,
-                )));
-        if (created) {
+                customer: customer, fcsShipment: widget.fcsShipment)));
+        if (created ?? false) {
           _load();
         }
       },