Order Fulfillment API - Support for dropoff options

Fulfillments now contain a new object for dropoffOptions with the following options:

"leaveAtDoor": true - customer opted for their delivery to be left at the door
"leaveAtDoor": false - customer opted to meet at the door for their delivery

This option is only relevant for orders that contain local delivery items, and can be ignored for carrier delivery fulfillments.

Please see updated swagger docs for the Get Orders endpoint here for full details.

Dropoff options will be supported on customer-facing platforms soon, and release notes will be posted for each platform rollout.