Fixed comments in sensors_module.cpp
Moved kiwi-related code to a dedicated module

- kiwi-related code (frame building) has moved to
modules/kiwiFrameBuilder_module.(h/cpp). Exported functions have been
limited to buildKiwiFrame(), that builds all the frame using
sensors variables exported sensors_module.h

- project properties and HAO-tracker's main have been changed
according to this refactoring