Add Skunny: Back to the Forest

[tomojira]

Skunny: Back to the Forest

• Matches with TDC#23 entry: Skunny- Back to the Forest [SWR] (1993)(Copysoft) [Action]
• TGOD and TDC don't have any disk images recorded
• The file RACE.GAM is modified when changing the game options, but it's included in the DOSZ because the game won't run without it (colours will be distorted and Skunny will fall through the ground when starting the game). I included a copy of it in the DOSC and it also has embedded data, though it's quite long.

DOSC

• cpu_year: 1993 is set (no effect on speed)
• Required RACE.GAM file
• Auto start