Refactors in UlxLuaValues, and add cursor-rewind to ReadLuaValues node.

Source/Integration/Common.h

@@ -11,6 +11,7 @@
 #pragma once
 
 #include <string_view>
+#include "lpx-basebuffer.hpp"
 #include "Blueprint/UserWidget.h"
 #include "Common.generated.h"
 
@@ -56,6 +57,12 @@ enum class ElxLuaValueType : uint8 {
     Vector
 };
 
+struct LuaValue : BaseLuaValue<std::string>
+{
+    ElxLuaValueType GetElxType() const { return static_cast<ElxLuaValueType>(type); }
+    void SetElxType(ElxLuaValueType t) { type = static_cast<LuaValueType>(t); }
+};
+
 ////////////////////////////////////////////////////////////
 //
 // Branching Enums