WIP: Duplicated the SLA gizmo for the FDM, removed what was not needed

Clipping plane and the m_model_object pointer keeping was duplicated

src/slic3r/GUI/Gizmos/GLGizmosManager.hpp

@@ -64,6 +64,7 @@ public:
         Cut,
         Hollow,
         SlaSupports,
+        FdmSupports,
         Undefined
     };
 
@@ -197,8 +198,11 @@ public:
     void set_flattening_data(const ModelObject* model_object);
 
     void set_sla_support_data(ModelObject* model_object);
+
+    void set_fdm_support_data(ModelObject* model_object);
+
     bool gizmo_event(SLAGizmoEventType action, const Vec2d& mouse_position = Vec2d::Zero(), bool shift_down = false, bool alt_down = false, bool control_down = false);
-    ClippingPlane get_sla_clipping_plane() const;
+    ClippingPlane get_clipping_plane() const;
     bool wants_reslice_supports_on_undo() const;
 
     void render_current_gizmo() const;