feat: inverse kwarg added to col_vals_regex()

[zilto]

Summary

Problem

I was using the regex check, but a success was defined as "no match". In dataframe libraries, it's simple to do a logical negation using ~. Currently, pointblank doesn't provide an interface to do so.

Alternatively, reworking the regex to "find no match" adds a lot of complexity (both for writing and computing the regex). In my case, the appropriate "find no match" regex wasn't supported by polars because of regex "look around" limitations.

Solution

Now, .col_vals_regex() accepts an inverse=... kwarg to flip the match results

Work done

• I followed the logic of inverse kwarg in row_count_match() checks
• I added inverse to the Interrogator class, which might be undesirable
• Now, regex checks pass the value {"pattern": "my-pattern", "inverse": False} instead of "my-pattern". I modified a test accordingly.
• Updated signatures in docstrings (didn't add full-on example text)

Remaining TODO

• Add tests to ensure that both inverse=True and inverse=False behave as expected
• Ensure that the HTML snapshots appropriately render check results (maybe we need to unpack the dict?)
• Update the HTML snapshots with the updated _ValidationInfo.values

(feel free to complete these steps if it's convenient)

Checklist

• I understand and agree to the Code of Conduct.
• I have followed the Style Guide for Python Code as best as possible for the submitted code.
• I have added pytest unit tests for any new functionality.

[zilto]

Just realized that .negate() is deprecated since ibis-frameworjk>=10.0.0. Will update