User Command (Script) Menu

The menu (commands / scripts) is configurable in `Configuration_adv.h`.

- Added conditionals.
- Changed script handling.
- Slimmed and working!
- Added Status message.
- Returning to lcd status screen now!
- Example Configs Updated.
- Cleanups by @thinkyhead

Marlin/example_configurations/FolgerTech-i3-2020/Configuration_adv.h

@@ -1240,4 +1240,27 @@
  */
 #define FASTER_GCODE_PARSER
 
+/**
+ * User-defined menu items that execute custom GCode
+ */
+//#define CUSTOM_USER_MENUS
+#if ENABLED(CUSTOM_USER_MENUS)
+  #define USER_SCRIPT_DONE "M117 User Script Done"
+
+  #define USER_DESC_1 "Home & UBL Info"
+  #define USER_GCODE_1 "G28\nG29 W"
+
+  #define USER_DESC_2 "Preheat for PLA"
+  #define USER_GCODE_2 "M140 S" STRINGIFY(PREHEAT_1_TEMP_BED) "\nM104 S" STRINGIFY(PREHEAT_1_TEMP_HOTEND)
+
+  #define USER_DESC_3 "Preheat for ABS"
+  #define USER_GCODE_3 "M140 S" STRINGIFY(PREHEAT_2_TEMP_BED) "\nM104 S" STRINGIFY(PREHEAT_2_TEMP_HOTEND)
+
+  #define USER_DESC_4 "Heat Bed/Home/Level"
+  #define USER_GCODE_4 "M140 S" STRINGIFY(PREHEAT_2_TEMP_BED) "\nG28\nG29"
+
+  //#define USER_DESC_5 "Home & Info"
+  //#define USER_GCODE_5 "G28\nM503"
+#endif
+
 #endif // CONFIGURATION_ADV_H