feat: add enum ml/base/cluster/kmeans/metrics

[nakul-krishnakumar]

Resolves None.

Description

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This pull request:

• Adds enum ml/base/cluster/kmeans/metrics

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• None.

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@stdlib-js/reviewers

[nakul-krishnakumar]

This PR adds metrics enum which is a part of the results object used in ml/cluster/strided/dkmeansld.

[nakul-krishnakumar]

/stdlib update-copyright-years

[stdlib-bot]

Coverage Report

Package	Statements	Branches	Functions	Lines
ml/base/cluster/kmeans/metric-enum2str	$\color{green}104/104$ $\color{green}+100.00%$	$\color{green}5/5$ $\color{green}+100.00%$	$\color{green}1/1$ $\color{green}+100.00%$	$\color{green}104/104$ $\color{green}+100.00%$
ml/base/cluster/kmeans/metric-resolve-enum	$\color{green}97/97$ $\color{green}+100.00%$	$\color{green}9/9$ $\color{green}+100.00%$	$\color{green}1/1$ $\color{green}+100.00%$	$\color{green}97/97$ $\color{green}+100.00%$
ml/base/cluster/kmeans/metric-resolve-str	$\color{green}96/96$ $\color{green}+100.00%$	$\color{green}9/9$ $\color{green}+100.00%$	$\color{green}1/1$ $\color{green}+100.00%$	$\color{green}96/96$ $\color{green}+100.00%$
ml/base/cluster/kmeans/metric-str2enum	$\color{green}96/96$ $\color{green}+100.00%$	$\color{green}5/5$ $\color{green}+100.00%$	$\color{green}1/1$ $\color{green}+100.00%$	$\color{green}96/96$ $\color{green}+100.00%$
ml/base/cluster/kmeans/metrics	$\color{green}145/145$ $\color{green}+100.00%$	$\color{green}5/5$ $\color{green}+100.00%$	$\color{green}2/2$ $\color{green}+100.00%$	$\color{green}145/145$ $\color{green}+100.00%$

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