Added layer menu and layer list

src/DrawingProgram/Layers/DrawingProgramLayerFolder.hpp

@@ -1,10 +1,14 @@
 #pragma once
 #include <Helpers/NetworkingObjects/NetObjOrderedList.hpp>
+#include <include/core/SkCanvas.h>
+#include "../../DrawData.hpp"
 
 class DrawingProgramLayerListItem;
 
 class DrawingProgramLayerFolder {
     public:
+        void draw(SkCanvas* canvas, const DrawData& drawData);
+
         NetworkingObjects::NetObjOwnerPtr<NetworkingObjects::NetObjOrderedList<DrawingProgramLayerListItem>> folderList;
         bool isFolderOpen = false;
 };