Comprehensive change to ExternalData for kitchen order
[v9preview1 v9 Two new operations have been added to Api V9Preview1 - ComplexAddOrUpdateKitchenOrderAndItemsExternalData and ComplexDeleteKitchenOrderAndItemsExternalData.
ComplexAddOrUpdateKitchenOrderAndItemsExternalData - allows you to add/update ExternalData for a kitchen order and all its items in bulk.
ComplexDeleteKitchenOrderAndItemsExternalData - allows you to delete all unnecessary ExternalData for a kitchen order and all its items at once.
These operations will be particularly useful in cases of active use of external data: operations generate a notification [KitchenOrderChanged] only once (https://syrve.github.io/front.api.sdk/v9/html/P_Resto_Front_Api_INotificationService_KitchenOrderChanged.htm), and are also executed faster than multiple uses of AddOrUpdateKitchenOrderExternalData / AddOrUpdateKitchenOrderItemExternalData / DeleteKitchenOrderExternalData / DeleteKitchenOrderItemExternalData.