Weightslab data issues

[guillaume-byte]

Fix dataloader with num_workers > 0
Allow data augmentation in the data loader:

• From scratch, preloading every image and augmented images
• Live augmentation, with workers

[guillaume-byte]

Current solution already allows:

• Data Aug. initially, i.e., increasing or replacing data with augmented data.
• Live data augmentation, where basically images are stored and visualized without aug., but augmented for training