Timed Auction

This gives an agent the behavior of an auction open for a certain amount of steps. Used in Bidding Model.

Needed Initialization Variables: (1) timed_auction_counter (2) timed_auction_length

Paired Behaviors: (1) Auctioned Item (https://hash.ai/index/5e86412feb2a711afc2fe0c1/auctioned-item) (2) Bid (https://hash.ai/index/5ed7fdca640ccc2c1e0e565b/bid) (3) Bidder (https://hash.ai/index/5e863d59eb2a716b802fe0b6/bidder)