chore: use CommonTechset instead of TechsetDefinition

src/ObjLoading/Techset/CommonTechsetCache.h

@@ -0,0 +1,21 @@
+#pragma once
+
+#include "Asset/IZoneAssetCreationState.h"
+#include "Techset/CommonTechset.h"
+
+#include <memory>
+#include <string>
+#include <unordered_map>
+
+namespace techset
+{
+    class CommonTechsetCache final : public IZoneAssetCreationState
+    {
+    public:
+        [[nodiscard]] CommonTechset* GetCachedTechsetDefinition(const std::string& techsetName) const;
+        void AddCommonTechsetToCache(std::string name, std::unique_ptr<CommonTechset> definition);
+
+    private:
+        std::unordered_map<std::string, std::unique_ptr<CommonTechset>> m_cache;
+    };
+} // namespace techset