added kode otp page, input informasi diri page, and user index tracking page, repair the back button on UserIndexTrackingView

lib/app/core/custom_base_view_model.dart

@@ -1,16 +1,53 @@
+import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
 import 'package:stacked/stacked.dart';
 import 'package:stacked_services/stacked_services.dart';
 
+import '../../services/http_services.dart';
+import '../../services/my_easyloading.dart';
 import '../app.locator.dart';
+import '../themes/app_colors.dart';
 
 class CustomBaseViewModel extends BaseViewModel {
   final dialogService = locator<DialogService>();
   final navigationService = locator<NavigationService>();
   final bottomSheetService = locator<BottomSheetService>();
   final snackbarService = locator<SnackbarService>();
+  final easyLoading = locator<MyEasyLoading>();
+  final httpService = locator<MyHttpServices>();
+
   bool backPressed = true;
 
   void back() {
     navigationService.back();
   }
+
+  quitApp(BuildContext context) {
+    showDialog(
+      context: context,
+      builder: (BuildContext context) {
+        return AlertDialog(
+          title: const Text('Keluar'),
+          content: const Text('Apakah Anda yakin ingin keluar?'),
+          actions: [
+            TextButton(
+              onPressed: () => Navigator.of(context).pop(false),
+              child: const Text('Batal'),
+            ),
+            TextButton(
+              onPressed: () => Navigator.of(context).pop(true),
+              child: const Text(
+                'Keluar',
+                style: TextStyle(color: dangerColor),
+              ),
+            ),
+          ],
+        );
+      },
+    ).then((value) {
+      if (value == true) {
+        SystemNavigator.pop();
+      }
+    });
+  }
 }