Game-agnostic modpack

[BuckarooBanzay]

This modpack would be great if it hadn't hard-coded default-games (hades, default and mcl currently)

The fallback-case if none of the above games are found would be to just register the nodes but no recipes or game-dependent registrations.

Let me know what you think of it, i would whip up a PR for this...

[random-geek]

This is an interesting idea, but there are a few complications. Textures for grass, stone, and sandstone-based lights are currently supplied by the games. Some backup textures could be included in Morelights, but they may clash with the game's textures. Sounds are also game-supplied, but I don't want to include backup sounds in the mod. Additionally, I believe digging groups vary by game, so even digging may end up broken for games that don't follow MTG's conventions.

I'm open to a PR if these issues are non-fatal, but I think it should be clear that this is an experimental mode only, and that non-supported games are still non-supported.