Work in progress: Good bye, Perl Threads!

xs/xsp/GUI_BackgroundSlicingProcess.xsp

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+
+%module{Slic3r::XS};
+
+%{
+#include <xsinit.h>
+#include "slic3r/GUI/BackgroundSlicingProcess.hpp"
+%}
+
+%name{Slic3r::GUI::BackgroundSlicingProcess} class BackgroundSlicingProcess {
+    BackgroundSlicingProcess();
+    ~BackgroundSlicingProcess();
+
+    void set_print(Print *print);
+    void set_gcode_preview_data(GCodePreviewData *gpd);
+    void set_sliced_event(int event_id);
+    void set_finished_event(int event_id);
+
+    bool start();
+    bool stop();
+    bool apply_config(DynamicPrintConfig *config);
+
+    bool running();
+};