调整类重载，修复部分BUG，增加请求头检查

UNSWebServerCore/WebFileInfo.h

@@ -31,6 +31,10 @@ public:
 	std::string GetExtensionName() const;
 	DateTime GetUploadTime() const;
 	size_t GetFileSize() const;
+
+public:
+	void SetStorageFileName(const std::string& sfn);
+	void SetOriginalFileName(const std::string& ofn);
 };
 
 using WebFileInfoVec = std::vector<WebFileInfo>;