[WIP] Add Latent Consistency Distillation Script #5517
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What does this PR do?
This PR adds an example script to perform latent consistency distillation following Algorithm 1 in the latent consistency models paper. Latent consistency distillation (LCD) distills a latent diffusion model (LDM) such as Stable Diffusion to a latent consistency model (LCM), allowing fast onestep or few-step inference using the LCM while preserving the performance of the LDM.
Follow up to PR #5448 .
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