Port GeomUtils code to pythonocc

The salomep project (http:s//salome-platform.org) provides useful utilities classes/method over occt.

Porting those to pythonocc would be a great contribution.

https://git.salome-platform.org/gitweb/?p=modules/geom.git;a=tree;f=src/GEOMUtils;h=49af4b5e5c4ff34b87f8db4cf4af997ac7b3fe87;hb=HEAD