[ts] Add fulfillment_service_handle to IFulfillmentOrder (#436)
[ts] Add fulfillment_service_handle to IFulfillmentOrder (#436)

Fixes: https://github.com/MONEI/Shopify-api-node/issues/435
microapps/Nodify-Shopify,MONEI/Shopify-api-node,MONEI/Shopify-api-node