Update to the new music asset repo and remove music assets by kevin Macleod from existing biomes

[IntegratedQuantum]

Should be done after the release, and after a decision on #1834 has been made, to reduce version 0.0.0 download time.

extracted from PixelGuys/Cubyz-Assets#1

[BoySanic]

When you say "Update to the new music asset repo", is there anything code-related that needs to change to facilitate that?
Or are we just cloning from this repo and manually placing into assets/music externally?

[BoySanic]

It's not very obvious which assets in Cubyz-Assets are royalty free public assets.

I see there are directories for specific artists, nothing's jumping out at me RE: Kevin Macleod.

Did we already remove those assets?

[IntegratedQuantum]

When you say "Update to the new music asset repo", is there anything code-related that needs to change to facilitate that?

Just the build.zig.zon needs to be changed to point to the new version of the assets.

[IntegratedQuantum]

Let me just do that real quick.