add quick access panel

src/node.h

@@ -1,4 +1,5 @@
 #pragma once
+#include "util.h"
 #include "event.h"
 
 enum class kAttribute : uint16_t
@@ -74,6 +75,7 @@ enum class kWidget : uint16_t
     PanelColor = const_hash("panel-color"),
     PanelStroke = const_hash("panel-stroke"),
     PanelGrid = const_hash("panel-grid"),
+    PanelQuick = const_hash("panel-quick"),
     ColorQuad = const_hash("color-quad"),
     StrokePreview = const_hash("stroke-preview"),
     Canvas = const_hash("canvas"),