feat(api): Add pointwise_conditional_loglikelihoods. Deprecate pointwise_loglikelihoods.

[sethaxen]

This PR renames pointwise_loglikelihoods to pointwise_conditional_loglikelihoods, which is more explicit. It also removes the docstring that advised packages overload the method (they can, of course, still do this).

Checklist

• PR follows official PR format
• The new feature is properly documented with an example.
• New or updated tests cover the new feature.
• Code style is correct (formatted using JuliaFormatter with BlueStyle).
• The new feature is listed in the Features section of the changelog if the change is non-breaking or the BREAKING CHANGES section if it is breaking.
• The patch version number been incremented if the change is non-breaking or the minor version number been incremented if the change is breaking.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.04%. Comparing base (5c051c3) to head (b565073).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #88   +/-   ##
=======================================
  Coverage   97.04%   97.04%           
=======================================
  Files          16       16           
  Lines         845      845           
=======================================
  Hits          820      820           
  Misses         25       25           

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