Feat: #21665 [dart][dart-dio] CopyWith for json_serializable (#21667)

* Add `@CopyWith()` annotation to model class mustache

* Add copyWith deps to pubspec mustache template

* generate examples

* add import for copyWith

Author: LahaLuhem

modules/openapi-generator/src/main/resources/dart/libraries/dio/pubspec.mustache

@@ -25,6 +25,7 @@ dependencies:
   equatable: '^2.0.7'
 {{/useEquatable}}
 {{#useJsonSerializable}}
+  copy_with_extension: '^7.1.0'
   json_annotation: '^4.9.0'
 {{/useJsonSerializable}}
 {{#useDateLibTimeMachine}}
@@ -38,6 +39,7 @@ dev_dependencies:
 {{/useBuiltValue}}
 {{#useJsonSerializable}}
   build_runner: any
+  copy_with_extension_gen: ^7.1.0
   json_serializable: '^6.9.3'
 {{/useJsonSerializable}}
   test: '^1.16.0'

modules/openapi-generator/src/main/resources/dart/libraries/dio/serialization/json_serializable/class.mustache

@@ -1,3 +1,4 @@
+import 'package:copy_with_extension/copy_with_extension.dart';
 import 'package:json_annotation/json_annotation.dart';
 {{#useEquatable}}
 import 'package:equatable/src/equatable_utils.dart';
@@ -17,6 +18,7 @@ part '{{classFilename}}.g.dart';
 {{#isDeprecated}}
 @Deprecated('{{{classname}}} has been deprecated')
 {{/isDeprecated}}
+@CopyWith()
 @JsonSerializable(
   checked: true,
   createToJson: true,

samples/openapi3/client/petstore/dart-dio/binary_response/pubspec.yaml

@@ -9,9 +9,11 @@ environment:
 
 dependencies:
   dio: '^5.7.0'
+  copy_with_extension: '^7.1.0'
   json_annotation: '^4.9.0'
 
 dev_dependencies:
   build_runner: any
+  copy_with_extension_gen: ^7.1.0
   json_serializable: '^6.9.3'
   test: '^1.16.0'

samples/openapi3/client/petstore/dart-dio/petstore_client_lib_fake-json_serializable/lib/src/model/additional_properties_class.dart

@@ -3,11 +3,13 @@
 //
 
 // ignore_for_file: unused_element
+import 'package:copy_with_extension/copy_with_extension.dart';
 import 'package:json_annotation/json_annotation.dart';
 
 part 'additional_properties_class.g.dart';
 
 
+@CopyWith()
 @JsonSerializable(
   checked: true,
   createToJson: true,

samples/openapi3/client/petstore/dart-dio/petstore_client_lib_fake-json_serializable/lib/src/model/all_of_with_single_ref.dart

@@ -4,11 +4,13 @@
 
 // ignore_for_file: unused_element
 import 'package:openapi/src/model/single_ref_type.dart';
+import 'package:copy_with_extension/copy_with_extension.dart';
 import 'package:json_annotation/json_annotation.dart';
 
 part 'all_of_with_single_ref.g.dart';
 
 
+@CopyWith()
 @JsonSerializable(
   checked: true,
   createToJson: true,

samples/openapi3/client/petstore/dart-dio/petstore_client_lib_fake-json_serializable/lib/src/model/animal.dart

@@ -3,11 +3,13 @@
 //
 
 // ignore_for_file: unused_element
+import 'package:copy_with_extension/copy_with_extension.dart';
 import 'package:json_annotation/json_annotation.dart';
 
 part 'animal.g.dart';
 
 
+@CopyWith()
 @JsonSerializable(
   checked: true,
   createToJson: true,

samples/openapi3/client/petstore/dart-dio/petstore_client_lib_fake-json_serializable/lib/src/model/api_response.dart

@@ -3,11 +3,13 @@
 //
 
 // ignore_for_file: unused_element
+import 'package:copy_with_extension/copy_with_extension.dart';
 import 'package:json_annotation/json_annotation.dart';
 
 part 'api_response.g.dart';
 
 
+@CopyWith()
 @JsonSerializable(
   checked: true,
   createToJson: true,

samples/openapi3/client/petstore/dart-dio/petstore_client_lib_fake-json_serializable/lib/src/model/array_of_array_of_number_only.dart

@@ -3,11 +3,13 @@
 //
 
 // ignore_for_file: unused_element
+import 'package:copy_with_extension/copy_with_extension.dart';
 import 'package:json_annotation/json_annotation.dart';
 
 part 'array_of_array_of_number_only.g.dart';
 
 
+@CopyWith()
 @JsonSerializable(
   checked: true,
   createToJson: true,

samples/openapi3/client/petstore/dart-dio/petstore_client_lib_fake-json_serializable/lib/src/model/array_of_number_only.dart

@@ -3,11 +3,13 @@
 //
 
 // ignore_for_file: unused_element
+import 'package:copy_with_extension/copy_with_extension.dart';
 import 'package:json_annotation/json_annotation.dart';
 
 part 'array_of_number_only.g.dart';
 
 
+@CopyWith()
 @JsonSerializable(
   checked: true,
   createToJson: true,

samples/openapi3/client/petstore/dart-dio/petstore_client_lib_fake-json_serializable/lib/src/model/array_test.dart

@@ -4,11 +4,13 @@
 
 // ignore_for_file: unused_element
 import 'package:openapi/src/model/read_only_first.dart';
+import 'package:copy_with_extension/copy_with_extension.dart';
 import 'package:json_annotation/json_annotation.dart';
 
 part 'array_test.g.dart';
 
 
+@CopyWith()
 @JsonSerializable(
   checked: true,
   createToJson: true,