Reorganized object settings pane

+ Added new control - PrusaLockButton

xs/src/slic3r/GUI/OptionsGroup.hpp

@@ -57,6 +57,7 @@ public:
     size_t		full_width {0}; 
     wxSizer*	sizer {nullptr};
     widget_t	widget {nullptr};
+    std::function<wxWindow*(wxWindow*)>	near_label_widget{ nullptr };
 
     void append_option(const Option& option) {
         m_options.push_back(option);
@@ -178,6 +179,8 @@ public:
 #endif /* __WXGTK__ */
     }
 
+    wxGridSizer*        get_grid_sizer(){ return m_grid_sizer; }
+
 protected:
 	std::map<t_config_option_key, Option>	m_options;
     wxWindow*				m_parent {nullptr};