update assimp to 6.0.5

Engine/lib/assimp/test/unit/Tools/TestTools.h

@@ -0,0 +1,27 @@
+#pragma once
+
+#include <gtest/gtest.h>
+#include <cstdio>
+#include <string>
+
+namespace Assimp::Unittest {
+
+    class TestTools final {
+    public:
+        TestTools() = default;
+        ~TestTools() = default;
+        static bool openFilestream(FILE **pFile, const char *filename, const char *mode);
+    };
+
+    inline bool TestTools::openFilestream(FILE **fs, const char *filename, const char *mode) {
+#if defined(_WIN32)
+        errno_t err{ 0 };
+        err = fopen_s(fs, filename, mode);
+        EXPECT_EQ(err, 0);
+#else
+        *fs = fopen(filename, mode);
+#endif
+        return fs != nullptr;
+    }
+
+} // namespace Assimp::Unittest