chore: update author name and copyright headers

Updated the author name and copyright statements across the
gns3_copilot module. The name has been standardized from
"Guobin Yue" to "Yue Guobin (岳国宾)" to reflect the correct
author attribution including Chinese characters.

gns3server/agent/gns3_copilot/utils/message_converters.py

@@ -2,8 +2,8 @@
 #
 # GNS3-Copilot - AI-powered Network Lab Assistant for GNS3
 #
-# Copyright (C) 2025 Guobin Yue
-# Author: Guobin Yue
+# Copyright (C) 2025 Yue Guobin (岳国宾)
+# Author: Yue Guobin (岳国宾)
 #
 # This file is part of GNS3-Copilot project.
 #