feat: add permission/user/group models, start integration into code

lib/core/database/tables/local_user_account.dart

@@ -1,6 +1,7 @@
 import 'package:hive_flutter/adapters.dart';
 import 'package:paperless_mobile/core/config/hive/hive_config.dart';
 import 'package:paperless_mobile/core/database/tables/local_user_settings.dart';
+import 'package:paperless_api/paperless_api.dart';
 
 part 'local_user_account.g.dart';
 
@@ -9,23 +10,19 @@ class LocalUserAccount extends HiveObject {
   @HiveField(0)
   final String serverUrl;
 
-  @HiveField(1)
-  final String username;
-
-  @HiveField(2)
-  final String? fullName;
-
   @HiveField(3)
   final String id;
 
   @HiveField(4)
   LocalUserSettings settings;
 
+  @HiveField(5)
+  UserModel paperlessUser;
+
   LocalUserAccount({
     required this.id,
     required this.serverUrl,
-    required this.username,
     required this.settings,
-    this.fullName,
+    required this.paperlessUser,
   });
 }