Damien Chazelle’s latest is a debauched, self-indulgent, headache-inducing slog. — First, a warning: Damien Chazelle’s new film Babylon is packed with sex, nudity, violence, swearing, drug abuse, multiple bodily fluids, and elephant excrement. In fact, the pachyderm scatological gross-out occurs in the very first scene, direct to camera. This repulsiveness sets the tone for what follows, during the depravity and…