Implement TODO functionality for resendMessage and copyCode methods in ChatService#1

Copilot wants to merge 2 commits intomainsungigant/CopilotForXcode:mainfrom

copilot/fix-d40cfb67-6310-4c7a-8455-65ab90ec2df3sungigant/CopilotForXcode:copilot/fix-d40cfb67-6310-4c7a-8455-65ab90ec2df3Copy head branch name to clipboard