please pull more yaml file support

[Alexandre Detiste]

I've cleaned up my fork, theres is now 4 commits to merge:
https://github.com/a-detiste/game-data-packager/commits/master

- turn Tyrian script in yaml description: 100% done
 It's impressive to see that even "game-data-packager tyrian -f /"
will find the right files.

- misc tweaks: little things to fix, you may want to fix in a more
appropriate way

- ROTT: add draft commercial versions to yaml
   -> this add data to the yaml, but it's not yet used by the script

- add draft yaml support for wolf3d
   -> this is not yet used too; but already quite extensive;
       wolf3d-data-wl1 will need support for "dynamite" expander in
python script


Alexandre Detiste