[FEATURE]: Distant Horizons Support

[BetaKors]

Before creating a request, please make sure you have checked the following:

• [X] Similar request had not already been reported before in the issue tracker.

What has to be improved/added?

Currently, whenever the player moves through the world, newly loaded chunks at the boundary between real chunks and DH chunks get faded in, instead of just the game just seamlessly exchanging DH chunks for real chunks with no transition. Here's a video that shows what's happening:

https://github.com/kerudion/chunksfadein/assets/88991219/525ff987-4f23-4bd1-a07f-bb12dbe389d8

My suggestion is to check if a real chunk has a corresponding DH chunk or is surrounded by DH chunks, and, if it is, don't fade it in.