feat: add float16 dtype support to ndarray/broadcast-scalar-like

[Erennn7]

Progresses #14240

Description

What is the purpose of this pull request?

This pull request:

• add float16 dtype support to ndarray/broadcast-scalar-like

Related Issues

Does this pull request have any related issues?

This pull request has the following related issues:

• [RFC]: add float16 support across the @stdlib/ndarray namespace #14240

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.

AI Assistance

When authoring the changes proposed in this PR, did you use any kind of AI assistance?

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• No

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• Code generation (e.g., when writing an implementation or fixing a bug)
• Test/benchmark generation
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• Research and understanding

Disclosure

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{{TODO: add disclosure if applicable}}

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[stdlib-bot]

Coverage Report

Package	Statements	Branches	Functions	Lines
ndarray/broadcast-scalar-like	$\\color{green}195/195$ $\\color{green}+100.00\\%$	$\\color{green}29/29$ $\\color{green}+100.00\\%$	$\\color{green}1/1$ $\\color{green}+100.00\\%$	$\\color{green}195/195$ $\\color{green}+100.00\\%$

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