WIP: Moved sources int src/, separated most of the source code from Perl.

The XS was left only for the unit / integration tests, and it links
libslic3r only. No wxWidgets are allowed to be used from Perl starting
from now.

src/slic3r/GUI/ButtonsDescription.hpp

@@ -0,0 +1,27 @@
+#ifndef slic3r_ButtonsDescription_hpp
+#define slic3r_ButtonsDescription_hpp
+
+#include <wx/dialog.h>
+#include <vector>
+
+namespace Slic3r {
+namespace GUI {
+
+using t_icon_descriptions = std::vector<std::pair<wxBitmap*, std::string>>;
+
+class ButtonsDescription : public wxDialog
+{
+	t_icon_descriptions* m_icon_descriptions;
+public:
+	ButtonsDescription(wxWindow* parent, t_icon_descriptions* icon_descriptions);
+	~ButtonsDescription(){}
+
+
+};
+
+} // GUI
+} // Slic3r
+
+
+#endif 
+