Added LogicalArithmeticsForRegistersCommand impl.

Added: LogicalArithmeticsForRegistersCommand (0x8XY1, 0x8XY2, 0x8XY3)
implementation.

Previous commit (a8f79538728403802f08b1b08b292412d996a41c) only deleted
LogicalOrCommand.cs but not added
LogicalArithmeticsForRegistersCommand.cs.