feat: remove out keyword, add C implementation and addon to cpolar API

[steff456]

Part of https://github.com/stdlib-js/todo/issues/1454

Description

What is the purpose of this pull request?

This pull request modifies the cpolar API by,

• Removes out keyword
• Adds support for Complex128 dtype
• Adds C implementation
• Adds native addon with benchmark, tests, examples and readme update

Related Issues

Does this pull request have any related issues?

This pull request:

• part of https://github.com/stdlib-js/todo/issues/1454

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.

---

@stdlib-js/reviewers

[stdlib-bot]

Coverage Report

Package	Statements	Branches	Functions	Lines
math/base/special/cpolar	$\color{green}212/212$ $\color{green}+100.00\%$	$\color{green}7/7$ $\color{green}+100.00\%$	$\color{green}3/3$ $\color{green}+100.00\%$	$\color{green}212/212$ $\color{green}+100.00\%$

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

[stdlib-bot]

Coverage Report

Package	Statements	Branches	Functions	Lines
math/base/special/cpolar	$\color{green}212/212$ $\color{green}+100.00\%$	$\color{green}7/7$ $\color{green}+100.00\%$	$\color{green}3/3$ $\color{green}+100.00\%$	$\color{green}212/212$ $\color{green}+100.00\%$

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

[stdlib-bot]

Coverage Report

Package	Statements	Branches	Functions	Lines
math/base/special/cpolar	$\color{green}212/212$ $\color{green}+100.00\%$	$\color{green}7/7$ $\color{green}+100.00\%$	$\color{green}3/3$ $\color{green}+100.00\%$	$\color{green}212/212$ $\color{green}+100.00\%$

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

[kgryte]

LGTM. Thanks, @steff456!

[stdlib-bot]

Coverage Report

Package	Statements	Branches	Functions	Lines
math/base/special/cpolar	$\color{green}212/212$ $\color{green}+100.00\%$	$\color{green}7/7$ $\color{green}+100.00\%$	$\color{green}3/3$ $\color{green}+100.00\%$	$\color{green}212/212$ $\color{green}+100.00\%$

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

[stdlib-bot]

Coverage Report

Package	Statements	Branches	Functions	Lines
math/base/special/cpolar	$\color{green}212/212$ $\color{green}+100.00\%$	$\color{green}7/7$ $\color{green}+100.00\%$	$\color{green}3/3$ $\color{green}+100.00\%$	$\color{green}212/212$ $\color{green}+100.00\%$

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

[stdlib-bot]

Coverage Report

Package	Statements	Branches	Functions	Lines
math/base/special/cpolar	$\color{green}212/212$ $\color{green}+100.00\%$	$\color{green}7/7$ $\color{green}+100.00\%$	$\color{green}3/3$ $\color{green}+100.00\%$	$\color{green}212/212$ $\color{green}+100.00\%$

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

[stdlib-bot]

Coverage Report

Package	Statements	Branches	Functions	Lines
math/base/special/cpolar	$\color{green}212/212$ $\color{green}+100.00\%$	$\color{green}7/7$ $\color{green}+100.00\%$	$\color{green}3/3$ $\color{green}+100.00\%$	$\color{green}212/212$ $\color{green}+100.00\%$

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

[stdlib-bot]

Coverage Report

Package	Statements	Branches	Functions	Lines
math/base/special/cpolar	$\color{green}212/212$ $\color{green}+100.00\%$	$\color{green}7/7$ $\color{green}+100.00\%$	$\color{green}3/3$ $\color{green}+100.00\%$	$\color{green}212/212$ $\color{green}+100.00\%$

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