feat: add ndarray/map

[headlessNode]

What is the purpose of this pull request?

This pull request:

• add top-level implementation of map function for @stdlib/ndarray

Related Issues

Does this pull request have any related issues?

This pull request:

• progresses [RFC]: achieve ndarray API parity with built-in JavaScript arrays  #2656

Questions

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No.

Other

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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
ndarray/map	$\color{green}180/180$ $\color{green}+100.00\%$	$\color{green}21/21$ $\color{green}+100.00\%$	$\color{green}1/1$ $\color{green}+100.00\%$	$\color{green}180/180$ $\color{green}+100.00\%$

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

[kgryte]

Thanks for working on this, @headlessNode. Did a bit of clean-up. This now LGTM.

[stdlib-bot]

PR Commit Message

feat: add `ndarray/map`

PR-URL: https://github.com/stdlib-js/stdlib/pull/3314
Ref: https://github.com/stdlib-js/stdlib/issues/2656

Co-authored-by: Athan Reines <kgryte@gmail.com>
Reviewed-by: Athan Reines <kgryte@gmail.com>
Signed-off-by: Muhammad Haris <101793258+headlessNode@users.noreply.github.com>

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