Put in auto-calibration measuring if G30 is available

StaticData/SliceSettings/Layouts.txt

@@ -330,7 +330,7 @@ Advanced
       Probe Settings
         print_leveling_probe_start
         manual_probe_paper_width
-      Options
+        use_g30_for_bed_probe
     Print Recovery
       Recover Settings
         recover_is_enabled

StaticData/SliceSettings/Properties.json

@@ -1179,7 +1179,7 @@
 		"SetSettingsOnChange": [ ],
 		"SlicerConfigName": "manual_probe_paper_width",
 		"PresentationName": "Manual Probe Paper Width",
-		"HelpText": "The thickness of the paper (or other calibration device) used to perform manual bed probe.",
+		"HelpText": "The thickness of the paper (or other calibration device) used to perform manual bed probe. For automatic (G30) bed probing, this is the offset of the probe from the tip of the nozzle.",
 		"DataEditType": "DOUBLE",
 		"ExtraSettings": "mm",
 		"ShowAsOverride": true,
@@ -1188,6 +1188,18 @@
 		"DefaultValue": ".1",
 		"RebuildGCodeOnChange": false
 	},
+	{
+		"QuickMenuSettings": [ ],
+		"SetSettingsOnChange": [ ],
+		"SlicerConfigName": "use_g30_for_bed_probe",
+		"PresentationName": "Use G30 for probing",
+		"HelpText": "Enable this if your printer has hardware support for G30 (automatic bed probing) and you want to use it rather than manually measuring the probe positions.",
+		"DataEditType": "CHECK_BOX",
+		"ShowAsOverride": true,
+		"ShowIfSet": "!has_hardware_leveling",
+		"ResetAtEndOfPrint": false,
+		"RebuildGCodeOnChange": false
+	},
 	{
 		"QuickMenuSettings": [ ],
 		"SetSettingsOnChange": [ ],