feat: add C implementation for stats/base/dists/lognormal/kurtosis

[vivekmaurya001]

Resolves #3749

Description

• adds C implementation for @stdlib/stats/base/dists/lognormal/kurtosis along with relevant tests, benchmarks and examples

This pull request:

• Progresses: [RFC]: Add C implementation for @stdlib/stats/base/dists/lognormal/kurtosis #3749

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Checklist

Please ensure the following tasks are completed before submitting this pull request.

• Read, understood, and followed the contributing guidelines

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@stdlib-js/reviewers

[stdlib-bot]

Coverage Report

Package	Statements	Branches	Functions	Lines
stats/base/dists/lognormal/kurtosis	$\color{green}183/183$ $\color{green}+100.00\%$	$\color{green}9/9$ $\color{green}+100.00\%$	$\color{green}2/2$ $\color{green}+100.00\%$	$\color{green}183/183$ $\color{green}+100.00\%$

The above coverage report was generated for the changes in this PR.

[vivekmaurya001]

/stdlib update-copyright-years

[Planeshifter]

Looking good.

[stdlib-bot]

PR Commit Message

feat: add C implementation for `stats/base/dists/lognormal/kurtosis`  

PR-URL: https://github.com/stdlib-js/stdlib/pull/4548
Closes: https://github.com/stdlib-js/stdlib/issues/3749

Co-authored-by: Philipp Burckhardt <[email protected]>
Co-authored-by: stdlib-bot <[email protected]>
Reviewed-by: Philipp Burckhardt <[email protected]>
Signed-off-by: Philipp Burckhardt <[email protected]>

Please review the above commit message and make any necessary adjustments.