`BinaryMatrixEngineAccessor` is incomplete

[Fayti1703]

BinaryMatrixEngineAccessor has some missing/unimplemented features that would be nice to have for debugging and testing purposes, in particular:

• A /full-state command that dumps the entire current game state to be inspected:

  BinaryMatrixPlayer/BinaryMatrixEngineAccessor/CommandExecution.cs

  Lines 95 to 99 in 325aa5b

  	#if false
  	private static void DumpFullState(GameContext game) {
  	throw new NotImplementedException();
  	}
  	#endif

• Support for more than two players:

  BinaryMatrixPlayer/BinaryMatrixEngineAccessor/CommandExecution.cs

  Line 7 in 325aa5b

  /* FIXME?: This doesn't support multiple players per side yet */

• Some form of file input to quickly restore to a game state. Luckily binmat is entirely deterministic (minus shuffles, but we use a PRNG), so seed + actions taken is enough to encode the entire game state.
• When no file input is provided, use a random seed (make sure this is stored/displayed somewhere to allow for restores)
• Display the binlog for the current turn in the output (Added from Add the binlog #8)