feat: add array/base/unary4d-by

[AbhijitRaut04]

Resolves #3174 .

Description

What is the purpose of this pull request?

This pull request:

• added functionality for unary4d-by

Related Issues

Does this pull request have any related issues?

This pull request:

• resolves [RFC]: add array/base/unary4d-by #3174

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-bot]

Coverage Report

Package	Statements	Branches	Functions	Lines
array/base/unary4d-by	$\color{green}171/171$ $\color{green}+100.00\%$	$\color{green}12/12$ $\color{green}+100.00\%$	$\color{green}1/1$ $\color{green}+100.00\%$	$\color{green}171/171$ $\color{green}+100.00\%$

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

[AbhijitRaut04]

@Planeshifter Kindly requesting you to review this PR.

[kgryte]

LGTM. Thanks, @AbhijitRaut04!