update Snapmaker profiles

- add Breakaway Support filament
- add preheat params for Snapmaker Dual/IDEX printers
- update the check bounds code in start-gcode, which is now off by default

resources/profiles/Snapmaker/process/fdm_process_idex.json

@@ -8,7 +8,7 @@
   "initial_layer_print_height": "0.2",
   "enable_arc_fitting": "1",
   "initial_layer_infill_speed": "75",
-  "outer_wall_speed": "145",
+  "outer_wall_speed": "120",
   "inner_wall_speed": "250",
   "sparse_infill_speed": "250",
   "internal_solid_infill_speed": "250",
@@ -36,6 +36,7 @@
   "support_bottom_z_distance": "0",
   "support_interface_top_layers": "3",
   "support_interface_pattern": "rectilinear",
+  "preheat_time": "90",
   "filename_format": "{input_filename_base}_{layer_height}mm_{print_time}_J1.gcode",
   "small_perimeter_threshold": "0",
   "support_material_synchronize_layers": "1"