Present clean exit logs

[jacalata]

We don't need the full stack trace on exit for users to see, but we should keep it in the logs.

          @jacalata to your comment about adjusting/trimming the debug logs, why don't we create an issue to revisit that in the future, so we don't forget.

Originally posted by @bcantoni in https://github.com/tableau/tabcmd/issues/276#issuecomment-1949283192