Changes to GET /api/inventory/purchaseorder

the results/items/expected_entry_date response's property format changed from date to no format for status 200

added the required property results/items/expected_entry_date_iso to the response with the 200 status

for the query request parameter page_size, the max was set to 1000.00

for the query request parameter page_size, the min was set to 1.00

added the required property results/items/color to the response with the 200 status

added the required property results/items/statuscode_id to the response with the 200 status

added the required property results/items/text_color to the response with the 200 status