Restructure ZoneDefinitionWriting

src/ZoneCommon/Zone/Definition/ZoneDefinition.h

@@ -0,0 +1,22 @@
+#pragma once
+
+#include <unordered_map>
+#include <vector>
+
+class ZoneDefinitionEntry
+{
+public:
+    std::string m_asset_type;
+    std::string m_asset_name;
+    bool m_is_reference;
+
+    ZoneDefinitionEntry();
+    ZoneDefinitionEntry(std::string type, std::string name, bool isReference);
+};
+
+class ZoneDefinition
+{
+public:
+    std::unordered_map<std::string, std::string> m_metadata;
+    std::vector<ZoneDefinitionEntry> m_assets;
+};