[DONE] Missing Intercept music track in TFTD

[Meridian]

https://github.com/OpenXcom/OpenXcom/issues/1333

[Meridian]

It is now possible to create aliases for music files:

Code: [Select]

musics:
  - type: GMINTER0
    name: GMISPOSH

This creates a music track called GMINTER0, which is loaded from a physical file called GMISPOSH.

The `name` attribute is optional and equals to `type` if not specified.