QmlDesigner: Prepare the process to compile shaders externally

Also added customValue for Uniform

Task-number: QDS-10811
Change-Id: Ie47ad41d0c80da149bdab9cae542297d59abcee6
Reviewed-by: Miikka Heikkinen <miikka.heikkinen@qt.io>

src/plugins/effectmakernew/effectmakerwidget.cpp

@@ -7,6 +7,8 @@
 #include "effectmakermodel.h"
 #include "effectmakernodesmodel.h"
 #include "effectmakerview.h"
+
+#include "nodeinstanceview.h"
 #include "qmldesignerconstants.h"
 #include "qmldesignerplugin.h"
 #include "qqmlcontext.h"