refs #80 - Sketch base GUI: create/draw point, circle and arc

refs #80 - Sketch base GUI: create/draw point, circle and arc

1. Using the GeomAPI_Lin projection/distance for a line to be used later for a lenght constraint.
2. Correct projection() in the Line
3. Append double flyout value argument to the constraint.
4. Add lenght constraint presentation and operation to create it(may be later it will be join with feature create operation)