Add StateMachine memory visualiser

Added a Debugger Visualiser to show the current state of the memory in
the interpreter's state machine.
Includes a DevelopmentHost project to debug the visualiser.
Current pointer > last non-zero

Add code to check that the current pointer is shown and highlighted,
even if it's after the last non-zero memory slot.
Merge pull request #1 from orangutanboy/master

Memory Visualiser