Changelog
- Convert FrostEmu.Logon from Exe to library; drop Main, icon, and standalone console loop
- Expose Start/ReloadConfig/Restart entry points on FrostEmu.Logon.Program for in-process hosting
- Add Stop() on LogonServer for graceful socket shutdown via Restart
- Add ProjectReference from FrostEmu.World to FrostEmu.Logon and wire LogonServer into Program.Main after config/DB init
- Add LogonServer property on World.Program alongside Server
- Add /logon restart and /logon reloadconfig console commands for managing the Logon listener from the World console