Add and display PartDesign Tree icons

created Partdesign_Hole, Tree_PartDesign_Pad, and
Tree_PartDesign_Revolution SVG icons
Referenced the above in the PartDesign.qrc file
Modified the ViewProviders to display the Tree_icons
for Chamfer, Fillet, Draft, Groove, Hole, LinearPattern,
Mirrored, MultiTransform, PolarTransform, Revolution,
Scaled, Pad and Pocket.
PartDesign_Hole has not been implemented yet however
the ViewProvider has been, so I added the icon

src/Mod/PartDesign/Gui/ViewProviderLinearPattern.h

@@ -33,7 +33,8 @@ class PartDesignGuiExport ViewProviderLinearPattern : public ViewProviderTransfo
     PROPERTY_HEADER(PartGui::ViewProviderLinearPattern);
 public:
     ViewProviderLinearPattern()
-        { featureName = std::string("LinearPattern"); }
+        { featureName = std::string("LinearPattern");
+          sPixmap = "PartDesign_LinearPattern.svg"; }
 
 protected:
     virtual bool setEdit(int ModNum);