Added JSON_PROXY to copy arrays and objects by reference

srcs/Internals/JsonNodeWrapper.h

@@ -0,0 +1,37 @@
+#pragma once
+
+#include "JsonNode.h"
+class JsonValue;
+
+class JsonNodeWrapper
+{
+    friend JsonValue;
+
+public:
+    JsonNodeWrapper()
+        : _node(0)
+    {
+    }
+
+    explicit JsonNodeWrapper(JsonNode* node)
+        : _node(node)
+    {
+    }
+
+protected:
+
+    void duplicate(const JsonNodeWrapper& other)
+    {
+        if (!_node)
+        {
+            _node = other._node;
+        }
+        else
+        {
+            _node->duplicate(other._node);
+        }
+    }
+
+    JsonNode* _node;
+};
+