Enhanced Deep Dark

Changelog:

Additions:

-Added a new music track titled 'Fathomless'. It plays occasionally in the deep dark and the main menu.

-Added Echo Displacer and Displacer Platform

Changes:

-Enhanced Deep Dark tracks now play on the main menu

-Echo Trials now generate slightly higher up

Fixes:

-Resonance Lights Block no longer appears in the creative menu

-Resonance Plates and Carved Deepslate Pillars' rotation has been fixed again

-Fixed generation of certain Suspicious Gravel in Ancient Cities