Extruders: add Gallileo 2 support (#308)

extruders/galileo-2.cfg

@@ -0,0 +1,26 @@
+# WARNING. DO NOT EDIT THIS FILE.
+# To override settings from this file, you can copy and paste the relevant
+# sections into your printer.cfg and change it there.
+
+# Configurator Metadata
+# {
+#   "type": "extruder",
+#   "title": "Galileo 2",
+#   "stepper": "LDO-36STH20-1004AHG",
+#   "current": 0.707
+# }
+
+[extruder]
+rotation_distance: 47.088
+gear_ratio: 9:1
+full_steps_per_rotation: 200
+filament_diameter: 1.750
+max_extrude_only_velocity: 60
+
+[firmware_retraction]
+retract_speed: 40
+unretract_extra_length: 0
+unretract_speed: 40
+
+# For LDO-36STH20-1004AHG motor
+[include ../steppers/ldo/36sth20-1004ahg/24v-0.7a-e.cfg]