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/Utils/PrintHost.cpp

@@ -0,0 +1,23 @@
+#include "OctoPrint.hpp"
+#include "Duet.hpp"
+
+#include "libslic3r/PrintConfig.hpp"
+
+namespace Slic3r {
+
+
+PrintHost::~PrintHost() {}
+
+PrintHost* PrintHost::get_print_host(DynamicPrintConfig *config)
+{
+	PrintHostType kind = config->option<ConfigOptionEnum<PrintHostType>>("host_type")->value;
+	if (kind == htOctoPrint) {
+		return new OctoPrint(config);
+	} else if (kind == htDuet) {
+		return new Duet(config);
+	}
+	return nullptr;
+}
+
+
+}