Adding scalar id type. (#354)

Author: fubhy

modules/graphql_core/src/Plugin/GraphQL/Scalars/GraphQLId.php

@@ -0,0 +1,18 @@
+<?php
+
+namespace Drupal\graphql_core\Plugin\GraphQL\Scalars;
+
+use Youshido\GraphQL\Type\Scalar\IdType;
+
+/**
+ * Scalar id type.
+ *
+ * @GraphQLScalar(
+ *   id = "id",
+ *   name = "ID",
+ *   data_type = "id"
+ * )
+ */
+class GraphQLId extends IdType {
+
+}