Add Stable Cascade support

[Ulexer]

TiledDiffusion runs with SC without errors but doesn't work correctly as it doesn't tile Stage B condition. Stage B uses latent from Stage C as condition. To make it work with TiledDiffusion latent needs to be cropped accordingly before passing to Stage B.

Example of output with TiledDiffusion:

Example without Tiled Diffusion but with correctly cropped condition: