PartDesign: Make Base Feature compatible with GeoFeatureGroup. fixes #0003080

The Original BaseFeature implementation had some serious issues with scoped links. It failed completely for e.g. sketches on the BaseFeature as it made a local link to refere to a out of body object. The only solution to make this work correctly is to add a proxy object into the body which is alloed to exactly that, to link outside oof the body. Something like shapebinder.

src/Mod/PartDesign/App/AppPartDesign.cpp

@@ -58,6 +58,7 @@
 #include "FeaturePipe.h"
 #include "FeatureLoft.h"
 #include "ShapeBinder.h"
+#include "FeatureBase.h"
 
 namespace PartDesign {
 extern PyObject* initModule();
@@ -146,6 +147,7 @@ PyMOD_INIT_FUNC(_PartDesign)
     PartDesign::Wedge                       ::init();
     PartDesign::AdditiveWedge               ::init();
     PartDesign::SubtractiveWedge            ::init();
+    PartDesign::FeatureBase                 ::init();
 
     PyMOD_Return(mod);
 }