NEW: config: add logic in config system to support multiple extruder

1. add nozzle_volume_type
2. add extruder_variant_list
3. add printer_extruder_variant,print_extruder_variant, filament_extruder_variant
4. construct backend fullprintconfig

Change-Id: I50659634e2cde363112ff5ded6c199d7548c6f2f
(cherry picked from commit 03058ba29dd358acd9726d1c58561e16409e8d04)

src/libslic3r/PresetBundle.hpp

@@ -149,6 +149,8 @@ public:
     // BBS: ams
     std::map<int, DynamicPrintConfig> filament_ams_list;
     std::vector<std::vector<std::string>> ams_multi_color_filment;
+
+    std::vector<int>    filament_maps;
     // Calibrate
     Preset const * calibrate_printer = nullptr;
     std::set<Preset const *> calibrate_filaments;