add ChColor interface to sensor swig wrapper
add ChColor interface to sensor swig wrapper

dariomangoni/chrono,projectchrono/chrono,projectchrono/chrono,projectchrono/chrono,projectchrono/chrono,rserban/chrono,rserban/chrono,dariomangoni/chrono,rserban/chrono,dariomangoni/chrono,rserban/chrono,dariomangoni/chrono,rserban/chrono,dariomangoni/chrono,rserban/chrono,projectchrono/chrono,projectchrono/chrono,rserban/chrono,dariomangoni/chrono