VTex Authorize dispatch for fulfillment order

Creates fulfillment order, meaning that it is an order for the seller's side in a sale made through a marketplace. This order assumes the transaction itself has already happened on the marketplace's side and, therfore, cares only about the fulfillment side. For a detailed explanation of the steps required to develop a custom connector to become an external marketplace for VTEX sellers, check out our complete [External Marketplace Integration Guide](https://developers.vtex.com/vtex-rest-api/...