Created message class and updated menu system

scripts/Classes/Menu/combo_menu_resource.gd

@@ -0,0 +1,16 @@
+extends MenuResource
+
+class_name ComboMenuResource
+
+## Script path
+@export var item_script: StringName
+## Menu that will be transitioned to
+@export var item_menu: StringName
+
+## Returns script resource
+func load_script() -> GDScript:
+	return ResourceLoader.load(item_script)
+
+## Returns menu resource
+func load_menu() -> Menu:
+	return ResourceLoader.load(item_menu)