gd: added input addon

guide_examples/two_joysticks/player.gd

@@ -0,0 +1,12 @@
+## This is the player script. Note how we can use the same script for both
+## players, by just injecting different actions into them. No needs to check
+## which player input we should consume.
+extends Node2D
+
+@export var speed:float = 150
+
+@export var move_action:GUIDEAction
+
+func _process(delta:float) -> void:
+	position += move_action.value_axis_2d.normalized() * speed * delta
+