Add the full source of BambuStudio

using version 1.0.10

lib/Slic3r/ExtrusionLoop.pm

@@ -0,0 +1,12 @@
+package Slic3r::ExtrusionLoop;
+use strict;
+use warnings;
+
+use parent qw(Exporter);
+
+our @EXPORT_OK = qw(EXTRL_ROLE_DEFAULT
+    EXTRL_ROLE_CONTOUR_INTERNAL_PERIMETER EXTRL_ROLE_SKIRT);
+our %EXPORT_TAGS = (roles => \@EXPORT_OK);
+
+
+1;