add antialiasing setting

scripts/debug/debugger.gd

@@ -283,6 +283,11 @@ func _on_control_draw() -> void:
 		_label3_text = ""
 
 		_append_text("fps", Engine.get_frames_per_second() as int, 0)
+		_append_text(
+			"resolution",
+			Vector2i(get_viewport().size * get_viewport().scaling_3d_scale as Vector2),
+			0
+		)
 
 	if mode == Mode.PERFORMANCE:
 		_set_label_texts()