Frontend first draft

frontend/pshared/lib/api/requests/permissions/change_policies.dart

@@ -0,0 +1,38 @@
+import 'package:json_annotation/json_annotation.dart';
+
+import 'package:pshared/data/dto/permissions/data/policy.dart';
+import 'package:pshared/data/mapper/permissions/data/policy.dart';
+import 'package:pshared/models/permissions/data/policy.dart';
+
+part 'change_policies.g.dart';
+
+
+@JsonSerializable(explicitToJson: true)
+class PoliciesChangeRequest {
+  final List<PolicyDTO>? add;
+  final List<PolicyDTO>? remove;
+
+  const PoliciesChangeRequest({
+    this.add, 
+    this.remove,
+  });
+
+  factory PoliciesChangeRequest.add({required List<Policy> policies}) => PoliciesChangeRequest(
+    add: policies.map((policy) => policy.toDTO()).toList(), 
+  );
+
+  factory PoliciesChangeRequest.remove({required List<Policy> policies}) => PoliciesChangeRequest(
+    remove: policies.map((policy) => policy.toDTO()).toList(),
+  );
+
+  factory PoliciesChangeRequest.change({
+    required List<Policy> add, 
+    required List<Policy> remove,
+  }) => PoliciesChangeRequest(
+    add: add.map((policy) => policy.toDTO()).toList(), 
+    remove: remove.map((policy) => policy.toDTO()).toList(),
+  );
+
+  factory PoliciesChangeRequest.fromJson(Map<String, dynamic> json) => _$PoliciesChangeRequestFromJson(json);
+  Map<String, dynamic> toJson() => _$PoliciesChangeRequestToJson(this);
+}