Support raw prompt embeddings input

[cvb941]

Hi.

Instead of passing a string prompt to the generator, I would like to pass in the raw text embeddings.

The HF Diffusers library allows this using the prompt_embeds (and pooled_prompt_embeds for SDXL) parameters on the StableDiffusionPipeline pipeline objects.

Would it be possible to add support for this to OneDiffusion? Thank you.