Add a mode to dumb frotz to support multiple players at once
Per https://intfiction.org/t/discourse-frotz/44649/20, a nice addition to Dumb Frotz would be the ability to restore a save if not starting the game, issue one command, print responses, save, and then terminate. The next move would then restore the save just now made. This would make it easier to allow a script to play multiple games with multiple people. This would take advantage of how Frotz can make the filenames of saves a string of numbers that increase with each save and restricted mode. Housekeeping text would be removed from output or at least tagged so it can be removed by the wrapper script.