Starcraft Music

Forked from Patton3D's https://mods.factorio.com/mod/starcraft-music with additional changes for ERM.

New changes:
- Added startup setting to toggle all SC music on nauvis, default to true.
- Added startup setting to toggle Zerg music on Vulcanus, default to true.
- Added startup setting to toggle Protoss music on Fulgora, default to true.
- Added startup setting to toggle Terran music on Gleba, default to true.

When this mod is downloaded with ERM protoss or ERM zerg, all startup settings are default to false.

Planet Char uses zerg tracks.

Planet Aiur uses protoss tracks.