Added 2 new operations:

Added 2 new operations:
- Extruded cut, allows to add material an existing shape by extrusion of a profile
- Extruded boss, allows to remove material from an existing shape by extrusion od a profile

Modified the sketcher dialog in order to use MakeSketcherOnPLane API instead of MakeSketcher. It is now possible to make a skecth directly on the face of a shape without creating a local coordinate system.

Code refactoring in the sketcher dialog