Added some missing song files needed in preparation for GiC's Chapter 3 update.

Remnant From the Ashes:
- Ravager Intro slightly lowered volume.
- Added Reisum Battle theme.
- Added Reisum Miniboss death tune.
- Standardized Reisum Miniboss song volume (removed +7db variant, updated original one) and removed the integrated death tune.
- Added Corsus Miniboss Theme and Death Tune.
- Added Corsus Battle Theme 1 and 2.
- Added Claviger Theme and Death Tune.
- Added Brudvaak & Vargr's theme and death tune.

Cultic:
- Added Heavy Armor track.

Updated for GiC 2.2

Updated for GiC 2.0.

Removed a large portion of unused songs, bringing the file-size down *just* marginally.