Adding Accessors and Mutators

Added accessors:
-getHighestBidValue
-getCurrentBidState
-getPlayerHand
-getCurrentTeamScores
-getCurrentTrick
-getKitty

Added mutators:
-setKitty

These additions required changes in other functions. This included
moving highBid to a class variable which is reset whenever Bidding is
called.

Preemptively added currentTeamScores as a class variable.