feat: add ml/base/cluster/kmeans/metric-str2enum

[nakul-krishnakumar]

Resolves None.

Description

What is the purpose of this pull request?

This pull request:

• Adds ml/base/cluster/kmeans/metric-str2enum.

Related Issues

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This pull request has the following related issues:

• None.

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Other

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• Read, understood, and followed the contributing guidelines.

AI Assistance

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@stdlib-js/reviewers

[nakul-krishnakumar]

This PR is blocked by #10714 and in cyclic dependency with #10841