Input Shaping Frequency

Input Shaping calibration based in https://marlinfw.org/docs/gcode/M593.html

src/slic3r/GUI/MainFrame.hpp

@@ -354,6 +354,7 @@ public:
     MaxVolumetricSpeed_Test_Dlg* m_vol_test_dlg { nullptr };
     VFA_Test_Dlg* m_vfa_test_dlg { nullptr };
     Retraction_Test_Dlg* m_retraction_calib_dlg{ nullptr };
+    Input_Shaping_Test_Dlg* m_IS_calib_dlg{ nullptr };
 
     // BBS. Replace title bar and menu bar with top bar.
     BBLTopbar*            m_topbar{ nullptr };