feat: add C implementation for stats/base/dists/frechet/mean

[vivekmaurya001]

Resolves #3609.

Description

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

This pull request:

• Progresses: [RFC]: Add C implementation for @stdlib/stats/base/dists/frechet/mean #3609

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Checklist

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• Read, understood, and followed the contributing guidelines

---

@stdlib-js/reviewers

[stdlib-bot]

Coverage Report

Package	Statements	Branches	Functions	Lines
stats/base/dists/frechet/mean	$\color{green}193/193$ $\color{green}+100.00\%$	$\color{green}13/13$ $\color{green}+100.00\%$	$\color{green}2/2$ $\color{green}+100.00\%$	$\color{green}193/193$ $\color{green}+100.00\%$

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

[Planeshifter]

/stdlib update-copyright-years

[Planeshifter]

Thanks, @vivekmaurya001!

[stdlib-bot]

PR Commit Message

feat: add C implementation for `stats/base/dists/frechet/mean`  

PR-URL: https://github.com/stdlib-js/stdlib/pull/4368
Closes: https://github.com/stdlib-js/stdlib/issues/3609

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.