[enhancement] if "Name of scummvm game".svm is a directory, lookup using prefix

[blysik]

Hi! I have ScummVM games in directories like this:

"Day of the Tentacle.svm"
"Zak McKracken and the Alien Mindbenders.svm"
etc

Currently, scraper appears to descend into the dir, and try to hash the first file. Instead, if the .svm is a directory, could you just strip the .svm extension, and then lookup using what's left?

It seems that retroarch support for ScummVM is moving in this direction, where the directory is the long name of the game, with a .svm extension.

Thanks!