Add a UUID column

Short UUID Generator uuid A Version 7 UUID is a universally unique identifier that is generated using a timestamp, a counter and a cryptographically strong random number Generally, uuid UUID Type # The data type uuid stores Universally Unique Identifiers as defined by RFC 4122, ISOIEC 9834-8:2005, and related standards (Some

uuid uuid : UUID name : String description : String inventory : ArrayList Item > extends Critter > Item visitors : ArrayList north , south , east , w est