Reverb for deeper caves

Adding reverb to deeper caves would make them more atmospheric and tenser to explore, while it helps you know where are some mobs, for example, with the reverb we would be able to hear footsteps from mobs some tens to hundreds of block from where you are, and, would make the deep dark even tenser, seeing that anything could be a potential danger, like the warden, for an example.

We should be able to enable and disable reverb from the config menu.