diffusers tensorboard safetensors text-to-image dreambooth diffusers-training latent-diffusion latent-diffusion-diffusers base_model:CompVis/ldm-text2im-large-256 base_model:finetune:CompVis/ldm-text2im-large-256 license:creativeml-openrail-m diffusers:LDMTextToImagePipeline region:us