Changes to Bulk Update Item Categories

added the optional property detail/items/ctx to the response with the 422 status

added the optional property detail/items/input to the response with the 422 status

added the new function enum value to the items/pinned_expression/tokens/items/type response property for the response status 200

added the new optional request property items/pinned_expression/name

added the new function enum value to the request property items/pinned_expression/tokens/items/type

added the optional property items/pinned_expression/name to the response with the 200 status

added the new optional request property items/show_description

added the optional property items/show_description to the response with the 200 status

added the new optional request property items/header_image_url

added the optional property items/header_image_url to the response with the 200 status

added the new optional request property items/child_sort_attribute_name

added the optional property items/child_sort_attribute_name to the response with the 200 status