feat: add blas/ext/base/ndarray/zxmy

[anandkaranubc]

Resolves stdlib-js/metr-issue-tracker#926

Description

What is the purpose of this pull request?

This pull request:

• adds blas/ext/base/ndarray/zxmy

Related Issues

Does this pull request have any related issues?

This pull request has the following related issues:

• [RFC]: add blas/ext/base/ndarray/zxmy metr-issue-tracker#926

Questions

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No.

Other

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No.

Checklist

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• Read, understood, and followed the contributing guidelines.

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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Disclosure

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Used Cursor+VS Code code-generation tools to help assist with the feature.

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