VoxelRendererConfig or similar

[mrzzzrm]

Currently we have the situation that everyone who draws voxel has to pass his settings (camera, withBorder, lightdir, more propably to follow) in every drawcall. apart from the danger of forgetting to set a uniform, it would be more convenient if these callers would have an interconnected handler where they can set these settings and call draw() on this object instead on the voxelrenderer-singleton directly.