SCI: Add detection entries for many more fan games.

I went through the SCI Wiki (http://sciwiki.sierrahelp.com/index.php?title=Fan_Game_List) and added md5 entries for all of the SCI fan games that ScummVM didn't already detect: 120 Degrees Below Zero, Betrayed Alliance, Edy Oliver into the Cave of Whistling Skulls Demo, Footsteps Sound Demo, Islands of Secrets Demo 0.3, the pre-alpha version of the King's Quest II SCI remake, LockerGnome Quest Redux, Robust Parse Demo 1.2, Logging Demo, Narration Demo, Text Views Demo, the final version of The Black Cauldron SCI remake, and Winter Wonderland.