FreeCad CAM simulation update #8: Show head path

Added option to show/hide head path and enable/disable ambient oclusion

[@philip_fletcher]

Brilliant! It seems to get even better every week! Thank you.

[@Skyliptor]

Cool, I'll have to check it out tonight

[@wolfgangweller6253]

looks great. a real improvement. That's exactly what I missed in freecad. Btw. I tried it with a Helix toolpath. There seems to be an issue. It looks not as expected. Nevertheless a big Thank You for your work. I can't wait for the final version.