Organize files into some new folders

global/helper.gd

@@ -0,0 +1,10 @@
+class_name Helper
+
+# Find a FoodItem among the direct children of [param node].
+static func find_food_item(node: Node) -> FoodItem:
+	if not node:
+		return null
+	for child in node.get_children():
+		if child is FoodItem:
+			return child
+	return null