cheat now has command-line arguments

Closed username-removed-1096594 requested to merge traas/open-adventure:master into master

-d number of deaths. Signed integer value

-s number of saves. Signed integer value

-s version number of save file. Signed integer value

-o file name of save game to write

I've also eliminated the pre-generated save file I used to do coverage of the version mismatch error, and used this to generate.

Also, got 100% test coverage of cheat.c

Edited by username-removed-1096594