feat: add blas/ext/base/glast-index-of-row

[headlessNode]

Resolves stdlib-js/metr-issue-tracker#221.

Description

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This pull request:

• add blas/ext/base/glast-index-of-row

Related Issues

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This pull request has the following related issues:

• Resolves [RFC]: add blas/ext/base/glast-index-of-row metr-issue-tracker#221

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Primarily written by Claude Code.

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[stdlib-bot]

Coverage Report

Package	Statements	Branches	Functions	Lines
blas/ext/base/glast-index-of-row	$\color{green}503/503$ $\color{green}+21.48%$	$\color{green}49/49$ $\color{green}+2.94%$	$\color{green}3/3$ $\color{green}+50.00%$	$\color{green}503/503$ $\color{green}+21.48%$

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

[headlessNode]

No need for 'base.js`

[kgryte]

Other than missing tests, this is looking good.

Given that changes already need to be made, it would be good to go ahead and update the description of LDA throughout this PR.

[kgryte]

@headlessNode I just realized that blas/ext/base/gindex-of-row and blas/ext/base/gindex-of-column are both missing the workspace array arguments. Same applies here.

Did not catch this previously, but we need the blas/ext/base/*index-of-row APIs to all have consistent interfaces. The typed versions (d, s, etc) all support a workspace strided array. We should be consistent here, as well.

The reason being that higher-level ndarray machinery won't know to branch based on dtypes. Instead, higher-level logic will assume that the API signatures are all consistent.

Would you mind updating this PR and opening PRs fixing gindex-of-row and gindex-of-column?