Work on console wrapper
+ ConsoleGameTester.java
   initializes a gameserver with ConsolePlayers
ConsolePlayer.java
   + ctor
   + printPlatersCards() method
   > better check for answer correctness
   > better exception handling, but not what is needed yet
   > dependentTurn(...) method
   + notify<...>Turn(...) methods
GameServer.java
   + ctor