Gui: Rework TaskCSysDragger into new Transform Dialog

This commit refactor ViewProviderDragger and TaskCSysDragger to be more
modern and to support selecting TransformOrigin.

src/Mod/Part/App/AppPart.cpp

@@ -34,6 +34,7 @@
 #include <Base/ExceptionFactory.h>
 #include <Base/Interpreter.h>
 #include <Base/Parameter.h>
+#include <Base/ServiceProvider.h>
 #include <Base/PrecisionPy.h>
 
 #include "ArcOfCirclePy.h"
@@ -187,8 +188,12 @@
 
 #include <OCAF/ImportExportSettings.h>
 #include "MeasureClient.h"
+
 #include <FuzzyHelper.h>
 
+#include <App/Services.h>
+#include <Services.h>
+
 namespace Part {
 extern PyObject* initModule();
 }
@@ -572,7 +577,10 @@ PyMOD_INIT_FUNC(Part)
         .GetGroup("BaseApp")->GetGroup("Preferences")->GetGroup("Mod/Part/Boolean");
     
     Part::FuzzyHelper::setBooleanFuzzy(hGrp->GetFloat("BooleanFuzzy",10.0));
-    
+
+    Base::registerServiceImplementation<App::SubObjectPlacementProvider>(new AttacherSubObjectPlacement);
+    Base::registerServiceImplementation<App::CenterOfMassProvider>(new PartCenterOfMass);
+
     PyMOD_Return(partModule);
 }
 // clang-format on