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/filament/Snapmaker Dual TPE.json

@@ -37,9 +37,6 @@
   "hot_plate_temp": [
     "45"
   ],
-  "hot_plate_temp_initial_layer": [
-    "45"
-  ],
   "overhang_fan_speed": [
     "65"
   ],