Added support for the Kirchhoff material also in the PyChrono wrapper
Added support for the Kirchhoff material also in the PyChrono wrapper

Milad-Rakhsha/chrono,Milad-Rakhsha/chrono,rserban/chrono,dariomangoni/chrono,rserban/chrono,rserban/chrono,rserban/chrono,projectchrono/chrono,projectchrono/chrono,Milad-Rakhsha/chrono,dariomangoni/chrono,Milad-Rakhsha/chrono,dariomangoni/chrono,Milad-Rakhsha/chrono,dariomangoni/chrono,rserban/chrono,rserban/chrono,projectchrono/chrono,dariomangoni/chrono,projectchrono/chrono,rserban/chrono,projectchrono/chrono,dariomangoni/chrono,projectchrono/chrono,Milad-Rakhsha/chrono