Add comprehensive GitHub Copilot instructions for AutoGen development (#7029)

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: ekzhu <320302+ekzhu@users.noreply.github.com>
Co-authored-by: Eric Zhu <ekzhu@users.noreply.github.com>

Copilot committed 11mo ago

29846cb26b588d4a977991f9f967805751ea65a3

Parent: 14809f5

Committed by GitHub <noreply@github.com> on 9/16/2025, 9:24:44 AM