Limit number of perimeters to 10 thousands, that is 50 meters with 0.2mm

nozzle. The number of perimeters has to be limited due to a numerical
overflow of fixed point 32bit coordinates in the offsetting algorithm.

src/libslic3r/PrintConfig.cpp

@@ -1375,6 +1375,7 @@ void PrintConfigDef::init_fff_params()
     def->sidetext = L("(minimum)");
     def->aliases = { "perimeter_offsets" };
     def->min = 0;
+    def->max = 10000;
     def->default_value = new ConfigOptionInt(3);
 
     def = this->add("post_process", coStrings);