AL's Enderman Revamped

*Added support for "Entity Sound Features" mod

*Added custom sounds for Enderlings, Whisperers, and Nether Endermen (ESF)

*All Enderman models now utilize enderman_eyes.png

*All Enderman models now share a single texture file

*Tweaked texture for Soul Sand Valley Enderman

*Tweaked Enderman eye colors

*Removed reliance on "Animatica" mod for animated textures, no longer required