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 PETG-CF @base.json

@@ -53,6 +53,9 @@
   "enable_pressure_advance": [
     "0"
   ],
+  "pressure_advance": [
+    "0.04"
+  ],
   "filament_type": [
     "PETG-CF"
   ],