Added internal counter for Sprite class interactions.
Added more interaction tracking and initial code for associating objects
    in the interaction.
Measurement: Single counters are working.

Include interactions and simple object counts.
Adding tracking files for new Tracker class.
new interface

adding a new interface, incrementally adding in simsam components. all
of simsam is intact, except you can move to the new interface by
replacing “/app” url with “/interface”