Command to extract all picture assets from both games?

[JPLeBreton]

Thanks for this fascinating project. I noticed that the extractvessels1 binary generated by the makefile creates PPM images of all the vessels. How much more work would it be to have a binary that extracts every other type of asset and saves it as an image in this fashion? I'm particularly interested in the starflt2 assets. (This would be for something like an illustrated strategy guide.)