Better logging

[LysandreJik]

This is the second part of the logging overhaul of the huggingface_hub.

This introduces the same logging utility that is defined in transformers and datasets. It aligns closer to datasets' logging system rather than transformers.

Since huggingface_hub is a dependency of both, it may make sense to upstream all logging-related logic in this library.

The third part of the better logging system will be to pass over all modules and define more constant logging with precise level reliability.

cc @lhoestq

Examples:

Logging level ERROR (close to no logging):

from huggingface_hub import Repository
from huggingface_hub import logging

logging.set_verbosity_error()

repository = Repository("new-repo", clone_from="Jikiwa/text-files"

Cloning https://huggingface.co/Jikiwa/text-files into local empty directory.

Process finished with exit code 0

Logging level DEBUG (maximum amount of logs):

from huggingface_hub import Repository
from huggingface_hub import logging

logging.set_verbosity_debug()

repository = Repository("new-repo", clone_from="Jikiwa/text-files"

git version 2.32.0
git-lfs/2.13.3 (GitHub; linux amd64; go 1.16.4)
Cloning https://huggingface.co/Jikiwa/text-files into local empty directory.
Download file file10.txt: 100%|██████████████████████████████████████████████████████████████████████████████| 19.2M/19.2M [00:17<00:00, 1.18MB/s]
Download file file2.txt: 100%|████████████████████████████████████████████████████████████████████████████████| 14.4M/14.4M [00:17<00:00, 883kB/s]
Download file file3.txt: 100%|████████████████████████████████████████████████████████████████████████████████| 14.4M/14.4M [00:17<00:00, 883kB/s]
Download file file1.txt: 100%|████████████████████████████████████████████████████████████████████████████████| 14.4M/14.4M [00:17<00:00, 883kB/s]
Download file file11.txt: 100%|██████████████████████████████████████████████████████████████████████████████| 19.2M/19.2M [00:17<00:00, 1.18MB/s]
Clean file file2.txt: 100%|██████████████████████████████████████████████████████████████████████████████████| 14.4M/14.4M [00:02<00:00, 7.49MB/s]
Clean file file10.txt: 100%|█████████████████████████████████████████████████████████████████████████████████| 14.4M/14.4M [00:02<00:00, 7.49MB/s]
Clean file file8.txt: 100%|██████████████████████████████████████████████████████████████████████████████████| 14.4M/14.4M [00:02<00:00, 7.49MB/s]
Clean file file3.txt: 100%|██████████████████████████████████████████████████████████████████████████████████| 14.4M/14.4M [00:02<00:00, 7.50MB/s]
Clean file file1.txt: 100%|██████████████████████████████████████████████████████████████████████████████████| 14.4M/14.4M [00:02<00:00, 7.50MB/s]
Clean file file11.txt: 100%|█████████████████████████████████████████████████████████████████████████████████| 19.2M/19.2M [00:02<00:00, 7.50MB/s]


Process finished with exit code 0