Shipped Package Object

A shipped packge object is used to describe the pacakges on labels inside manifest requests.

Name	Type	Nullable?	Description
`tracking_number`	string	✔	The carrier tracking number for this shipment.
`alternative_identifiers`	identifier object[]	✔	Alternative identifiers associated with this package.
`dimension_details`	dimension details object	✔	The dimensions for the package.
`weight_details`	weight details object	✔	The weight for the package.
`package_code`	string	✔	The code associated with the package type.