Add ScummVM-supported games

[kparal]

Quite surprisingly, ScummVM-supported games are completely missing in OSGC, with an exception of the Blade Runner. There is a catch-all entry named SCUMM, but that probably won't help much to a general reader. If people search e.g. for The Secret of Monkey Island or Simon the Sorcerer, they'll have no idea that there actually is an opensource project which can run those old games.

I understand that it's a lot of work, but I think the best approach (for readers) is to make an entry for all ScummVM-supported games in OSGC.

[hendursaga]

Duplicate of #1818 perhaps?