add image-classification task template

[nateraw]

Snippet below is the tl;dr, but you can try it out directly here:

from datasets import load_dataset

ds = load_dataset('nateraw/image-folder', data_files='PetImages/')
# DatasetDict({
#     train: Dataset({
#         features: ['file', 'labels'],
#         num_rows: 23410
#     })
# })

ds = ds.prepare_for_task('image-classification')
# DatasetDict({
#     train: Dataset({
#         features: ['image_file_path', 'labels'],
#         num_rows: 23410
#     })
# })

[albertvillanova]

Thanks you for this new task template.

It seems good to me.

[lhoestq]

Thanks ! cc @lewtun

[thomwolf]

Awesome!

[lewtun]

Thanks for adding a new task template - great work @nateraw 🚀 !