add utility to check a common eye tracker implementation against the standard template

[isolver]

the utility should report any public class methods that are in the implementation that are not in the base class, check that each method signature is correct, that any 'mandatory' methods have been over-ridden, check for commenting / documenting, etc.

[isolver]

This is done, but in a very ugly and un-usable way. Given everything that needs to be done; postponing this until 0.8.