NewShapeModifier seems to work

The NewShapeModifier class that based on a function input (it treats only Geometry, Reference/Face, Real, and Integer with default preset value) seems to work. Still there is need still to be checked on bugs and to implement some user usability features, like: if a function have three points geometry, to build at start a line, and at the third point to draw the subsequent shape.

But the good thing is that NewShapeModifier enters in the plugin public classes, so for persons that wants to extend easy Naro, they will have a chance to create fast a shape, without worry on NaroCAD's modifiers framework.