Changes to Get Related Items and Trends

added the optional property similar/items/requirements/items/data_key to the response with the 200 status

added the optional property similar/items/requirements/items/operator to the response with the 200 status

added the optional property similar/items/requirements/items/value to the response with the 200 status

added the required property similar/items/gemstone_slots/items/requirements to the response with the 200 status

endpoint added