chore: use RawTemplater to template XModel loading code for t5 and t6

src/ObjLoading/XModel/XModelFileLoader.h

@@ -0,0 +1,18 @@
+#pragma once
+
+#include "XModel/XModelCommon.h"
+
+#include <memory>
+
+class XModelFileLoader
+{
+public:
+    XModelFileLoader() = default;
+    virtual ~XModelFileLoader() = default;
+    XModelFileLoader(const XModelFileLoader& other) = default;
+    XModelFileLoader(XModelFileLoader&& other) noexcept = default;
+    XModelFileLoader& operator=(const XModelFileLoader& other) = default;
+    XModelFileLoader& operator=(XModelFileLoader&& other) noexcept = default;
+
+    virtual std::unique_ptr<XModelCommon> Load() = 0;
+};