chore: refactor IW4 asset loaders

src/ObjLoading/Game/IW4/Shader/LoaderPixelShaderIW4.h

@@ -0,0 +1,15 @@
+#pragma once
+
+#include "Asset/IAssetCreator.h"
+#include "Game/IW4/IW4.h"
+#include "SearchPath/ISearchPath.h"
+#include "Utils/MemoryManager.h"
+
+#include <memory>
+
+namespace IW4
+{
+    [[nodiscard]] std::string GetPixelShaderFileName(const std::string& pixelShaderAssetName);
+
+    std::unique_ptr<AssetCreator<AssetPixelShader>> CreatePixelShaderLoader(MemoryManager& memory, ISearchPath& searchPath);
+} // namespace IW4