Get all tags

Retrieves all tags for an order.
Note: In the REST API, a merchant uses two types of tags:

1. Tags, also known as item labels, are used to keep track of these items in reports.
2. Tags associated with the printer work as a printer label.
   Example: If a tag is associated with both an item and a printer, when the order is printed, the tagged items are printed only on the associated printer.