[AGS] unknown game variant for 'ags-fallback' (Zniw Adventure)

[MarcoBorrini99]

The game in 'Zniw Adventure' seems to
be an unknown game variant.

Please report the following data to the ScummVM team at
https://bugs.scummvm.org/ along with the name of the game you tried to add and
its version, language, etc.:

Matched game IDs for the ags engine: zniwadventure

{"ctgame.exe", 0, "8a2d48ee8d92bad3c5cacd8b883c5871", 100067140},

Extra Info
URL		​https://www.gog.com/en/game/zniw_adventure
VERSION		1.3.4.1w-gog_(64bit)_(60118)
LANGUAGE		English
PLATFORM		Gog.com/Windows