Add log message on bot exit command

DeukBot4/MessageHandlers/CommandHandler/Commands/OwnerCommands.cs

@@ -62,6 +62,7 @@ namespace DeukBot4.MessageHandlers.CommandHandler
         [Command("exit", PermissionLevel.BotCreator)]
         public async Task ExitBot(CommandRequest request)
         {
+            Console.WriteLine($"Bot exit was requested by {request.OriginalMessage.Author.Username}.");
             Environment.Exit(0);
         }