Draft: Resolve "[Reproducibility] Branch with datasets from huggingface"

• Add HF datasets with only one category of image (either Real of Fake) to match current dataset accessor template
• Add HF datasets with possibly multiple categories of images, and other fields ? (e.g. varying generator)
  • For example the associated prompts ?
  • Match with generation database template ?
• Add HF datasets with urls (not images)
• Add HD datasets with restricted access (need HF access token)

Bonus :

• Default behaviour is copying, which is redundant, avoid it by passign images directly to transformations ?