[MRG] Make sure all API methods accept sample_domain as None

[YanisLalou]

Issue #17

• Change default value for allow_auto_sample_domain in check_X_y_domain
• check if the masking of y is well done in check_X_y_domain

[codecov[bot]]

Codecov Report

Attention: 15 lines in your changes are missing coverage. Please review.

Comparison is base (895f862) 84.43% compared to head (8f3d286) 86.16%.

:exclamation: Current head 8f3d286 differs from pull request most recent head 2f428a8. Consider uploading reports for the commit 2f428a8 to get more accurate results

Files	Patch %	Lines
skada/utils.py	83.07%	11 Missing :warning:
skada/metrics.py	75.00%	3 Missing :warning:
skada/_utils.py	94.73%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #53 +/- ## ========================================== + Coverage 84.43% 86.16% +1.72% ========================================== Files 35 37 +2 Lines 2191 2334 +143 ========================================== + Hits 1850 2011 +161 + Misses 341 323 -18 ```

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[kachayev]

@YanisLalou I can't seem to push the update from my local branch here (not sure why, github previously allowed me to do so). Would you please check flake8 locally and fix all of its complaints?

[YanisLalou]

⬆️ Issue #58