Load Image Classification Dataset from Local 
Hi ! Is this folder structure a standard, a bit like imagenet ?
In this case maybe we can consider having a dataset loader for cifar-like, imagenet-like, squad-like, conll-like etc. datasets ?
```python
from datasets import load_dataset

my_custom_cifar = load_dataset("cifar_like", data_dir="path/to/data/dir")
```

Let me know what you think Yep that would be sweet - closing for now as we found a workaround.  @lhoestq I think we'll want a generic `image-folder` dataset (same as 'imagenet-like'). This is like `torchvision.datasets.ImageFolder`, and is something vision folks are used to seeing. Opening this back up, since I'm planning on tackling this. Already posted a quick version of it on my account on the hub.

```python
from datasets import load_dataset

ds = load_dataset('nateraw/image-folder', data_files='PetImages/')
``` Bumping this one following our recent discussion @mariosasko @nateraw :)
**Is your feature request related to a problem? Please describe.**
Yes - we would like to load an image classification dataset with datasets without having to write a custom data loader.

**Describe the solution you'd like**

Given a folder structure with images of each class in each folder, the ability to load these folders into a HuggingFace dataset like "cifar10".

**Describe alternatives you've considered**

Implement ViT training outside of the HuggingFace Trainer and without datasets (we did this but prefer to stay on the main path)

Write custom data loader logic

**Additional context**

We're training ViT on custom dataset
