Bound Remote Server log file size and retention

[Shao-Chicken]

Summary

This change bounds ASCOM Remote Server trace logging growth so servers no longer consume unlimited disk space over time.

Changes

• Add bounded logging for server-side trace logs in Remote Server only, with:
  • default max file size of 50 MiB
  • up to 10 retained files per logger type
• Keep behavior explicit and local to the Remote Server logger types; compatibility for non-targeted/default logger paths is preserved.
• Make midnight rollover respect a custom trace folder path.
• Improve retention cleanup safety:
  • exact file pattern matching (ASCOM.{type}.*.txt)
  • ignore unrelated paths/files
  • skip reparse points
• Add regression tests in Remote Server.Tests for size rollover and cross-day retention.

Verification

• dotnet build ASCOM Remote.sln --configuration Release --no-restore
• dotnet test Remote Server.Tests/Remote Server.Tests.csproj --configuration Release --no-restore

Notes

Related issue context: ASCOMRemote issue #55