feat(stats): add nanpcorrdist package

[hans2001]

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Resolves #5618 .

Description

What is the purpose of this pull request?

This PR introduces the nanpcorrdist package—a thin wrapper around pcorrdist that skips updates when either input is NaN, ensuring robust incremental computation of the Pearson correlation distance.

This pull request:

test coverage:

example:

benchmark:

Related Issues

Does this pull request have any related issues?

This pull request:

• resolves [RFC]: add stats/incr/nanpcorrdist #5618

Questions

Any questions for reviewers of this pull request?

No.

Other

Any other information relevant to this pull request? This may include screenshots, references, and/or implementation notes.

No.

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/incr/nanpcorrdist	$\\color{green}158/158$ $\\color{green}+0.00\\%$	$\\color{green}13/13$ $\\color{green}+0.00\\%$	$\\color{green}2/2$ $\\color{green}+0.00\\%$	$\\color{green}158/158$ $\\color{green}+0.00\\%$

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

[Planeshifter]

Thanks! If you are still interested to move this PR forward, here are some comments.

[Planeshifter]

/stdlib merge

[Planeshifter]

Should be good to go.

[stdlib-bot]

PR Commit Message

feat(stats): add `stats/incr/nanpcorrdist`

PR-URL: https://github.com/stdlib-js/stdlib/pull/6201
Closes: https://github.com/stdlib-js/stdlib/issues/5618

Co-authored-by: Philipp Burckhardt <pburckhardt@outlook.com>
Co-authored-by: stdlib-bot <noreply@stdlib.io>
Reviewed-by: Philipp Burckhardt <pburckhardt@outlook.com>

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