Update AppUser Objecct to cater for all fields.

enable file generation of med cert

Frontend/patient_manager/lib/objects/AppUser.dart

@@ -1,15 +1,39 @@
 class AppUser {
-  final int idusers;
-  final String email;
+  final int idUser;
+  final String UserName;
   final int docOffice_id;
+  final String fname;
+  final String lname;
+  final String title;
 
-  const AppUser(
-    this.idusers,
-    this.email,
-    this.docOffice_id,
-  );
+  const AppUser({
+    required this.idUser,
+    required this.UserName,
+    required this.docOffice_id,
+    required this.fname,
+    required this.lname,
+    required this.title,
+  });
 
-  factory AppUser.fromJson(dynamic json) {
-    return AppUser(json['idusers'], json['email'], json['docOffice_id']);
+  factory AppUser.fromJson(Map<String, dynamic> json) {
+    return switch (json) {
+      {
+        'idUser': int idUser,
+        'UserName': String UserName,
+        'docOffice_id': int docOffice_id,
+        'fname': String fname,
+        'lname': String lname,
+        'title': String title,
+      } =>
+        AppUser(
+          idUser: idUser,
+          UserName: UserName,
+          docOffice_id: docOffice_id,
+          fname: fname,
+          lname: lname,
+          title: title,
+        ),
+      _ => throw const FormatException('Failed to load album.'),
+    };
   }
 }