Added log-likelihood, pseudo r2 and pearson chi2 to fepois and tests for the first two against fixest

[Ariadnaaz]

No description provided.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

Flag	Coverage Δ
core-tests	75.73% <100.00%> (+0.02%)	⬆️
tests-extended	?
tests-vs-r	16.15% <14.28%> (-0.01%)	⬇️

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Files with missing lines	Coverage Δ
pyfixest/estimation/fepois_.py	89.04% <100.00%> (+0.36%)	⬆️

... and 7 files with indirect coverage changes

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[s3alfisc]

Needed to fix a few things. Should be possible to merge this after CI passes. Maybe you could still adjust the changelog and inform users that we now export these coefficients for Poisson reg / fepois?

[Ariadnaaz]

Okay thiank you! Do you mean adding it to "changelog.qmd"? Should I make a new subsection under "## New features"?

[s3alfisc]

Okay thiank you! Do you mean adding it to "changelog.qmd"? Should I make a new subsection under "## New features"?

I actually quickly did it myself =)

[s3alfisc]

@all-contributors please add @Ariadnaaz for code

[allcontributors]

@s3alfisc

I've put up a pull request to add @Ariadnaaz! 🎉