Add option to Change the created_via field.

Can be useful when WooCommerce is being used from multiply sources. For example, with plugins like Point of Sale for WooCommerce.

includes/mutation/class-order-create.php

@@ -108,6 +108,10 @@ public static function get_input_fields() {
 				'type'        => 'Boolean',
 				'description' => __( 'Define if the order is paid. It will set the status to processing and reduce stock items.', 'wp-graphql-woocommerce' ),
 			),
+			'createdVia'         => array(
+				'type'        => 'String',
+				'description' => __( 'Order created via', 'wp-graphql-woocommerce' ),
+			),
 		);
 
 		return $input_fields;
@@ -169,7 +173,7 @@ public static function mutate_and_get_payload() {
 					throw new UserError( __( 'Customer ID is invalid.', 'wp-graphql-woocommerce' ) );
 				}
 
-				$order->set_created_via( 'graphql-api' );
+				$order->set_created_via( ! empty( $input['createdVia'] ) ? $input['createdVia'] : 'graphql-api' );
 				$order->set_prices_include_tax( 'yes' === get_option( 'woocommerce_prices_include_tax' ) );
 				$order->calculate_totals( true );