Add model card (#2)

Improve model card: Add pipeline tag, library name, links, and usage details (#1)

fix checkpoint densepose unet

update ft UNet checkpoint for depth, normal

add DiT checkpoints: pose

add DiT checkpoints

add DiT checkpoints

reorganize the UNet checkpoints

add: fine-tuned checkpoint for UNet model

add: meta-train checkpoint for UNet model

initial commit