MD5-Unknown game variant for director- A Case for Cap & Co

[yoshimo]

The game in 'MUETZE\' 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 director engine: director-win-fallback

{"muetze95.exe", 0, "t:a04f2d4af18a04dd2a8343498435538f", 1559137},

This is a detective game for children, called "Ein Fall für Mütze & Co" in german.

​https://www.mobygames.com/game/199999/a-case-for-cap-co/

[tag2015]

In 0aee4b4b:

DIRECTOR: Add detection for "A Case for Cap & Co"

+ a couple demos
Fix #15845