Unknown game variant for mads

[TrivialBalderdash]

The game in 'Files' 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 mads engine: nebular

{"mpslabs.001", 0, "4df5c557b52abb5b661cf4befe5ae301", 1315354},
{"mpslabs.idx", 0, "d74bed6513d0a5d514269750f574a23b", 5598},

This is for the 3.5" v8.44 European version of the Rex Nebular, installer files. The installed version from these floppies is detected correctly by ScummVM.

Looks like this is similar to #13931, but the .idx file has a different hash.

I'm running ScummVM 2.7.0 Feb 19, 2023 on an Intel iMac.

Thank you for looking into this!

[tag2015]

Thanks! Added in ​79e3e85