[dart] Move dart-dio to sit with other dart configs (#7593)

* Move dart-dio to other dart configs

* Run ./bin/generate-samples.sh

samples/client/petstore/dart-dio/.openapi-generator/FILES

@@ -0,0 +1,29 @@
+.gitignore
+README.md
+analysis_options.yaml
+doc/ApiResponse.md
+doc/Category.md
+doc/Order.md
+doc/Pet.md
+doc/PetApi.md
+doc/StoreApi.md
+doc/Tag.md
+doc/User.md
+doc/UserApi.md
+lib/api.dart
+lib/api/pet_api.dart
+lib/api/store_api.dart
+lib/api/user_api.dart
+lib/api_util.dart
+lib/auth/api_key_auth.dart
+lib/auth/auth.dart
+lib/auth/basic_auth.dart
+lib/auth/oauth.dart
+lib/model/api_response.dart
+lib/model/category.dart
+lib/model/order.dart
+lib/model/pet.dart
+lib/model/tag.dart
+lib/model/user.dart
+lib/serializers.dart
+pubspec.yaml

samples/client/petstore/dart-dio/lib/model/order.dart

@@ -41,13 +41,13 @@ abstract class Order implements Built<Order, OrderBuilder> {
 class OrderStatus extends EnumClass {
 
   /// Order Status
-  @BuiltValueEnumConst(wireName: "placed")
+  @BuiltValueEnumConst(wireName: 'placed')
   static const OrderStatus placed = _$placed;
   /// Order Status
-  @BuiltValueEnumConst(wireName: "approved")
+  @BuiltValueEnumConst(wireName: 'approved')
   static const OrderStatus approved = _$approved;
   /// Order Status
-  @BuiltValueEnumConst(wireName: "delivered")
+  @BuiltValueEnumConst(wireName: 'delivered')
   static const OrderStatus delivered = _$delivered;
 
   static Serializer<OrderStatus> get serializer => _$orderStatusSerializer;

samples/client/petstore/dart-dio/lib/model/pet.dart

@@ -44,13 +44,13 @@ abstract class Pet implements Built<Pet, PetBuilder> {
 class PetStatus extends EnumClass {
 
   /// pet status in the store
-  @BuiltValueEnumConst(wireName: "available")
+  @BuiltValueEnumConst(wireName: 'available')
   static const PetStatus available = _$available;
   /// pet status in the store
-  @BuiltValueEnumConst(wireName: "pending")
+  @BuiltValueEnumConst(wireName: 'pending')
   static const PetStatus pending = _$pending;
   /// pet status in the store
-  @BuiltValueEnumConst(wireName: "sold")
+  @BuiltValueEnumConst(wireName: 'sold')
   static const PetStatus sold = _$sold;
 
   static Serializer<PetStatus> get serializer => _$petStatusSerializer;