[RFC]: improve type declarations for `@stdlib/utils/group`

[kgryte]

Description

This RFC proposes improving the TypeScript type declarations for @stdlib/utils/group. Currently, considerable type information is lost when returning results, which are presently typed as any.

Ideally, we'd improve declarations similar to @stdlib/utils/group-by which better preserves type info.

Related Issues

#1084

Questions

No.

Other

No.

Checklist

• I have read and understood the Code of Conduct.
• Searched for existing issues and pull requests.
• The issue name begins with RFC:.

[BhaveshP443]

@kgryte I want to work on this issue please assign this issue to me.

[performant23]

Hello, just noticed that this issue is currently unassigned. Since I don't have any issue at hand as of now and have reviewed both the ‘group’ and ‘group by’ sections and have identified the necessary changes, if it’s alright, may I proceed to work on this issue @kgryte?
Thank you!

[rajutkarsh07]

@Planeshifter @kgryte I have understood this issue, I would like to work on it Please assign this to me

[kgryte]

@performant23 Since you already have a few issues in-flight, let's focus getting those over the finish line before moving on to other issues.

@rajutkarsh07 Feel free to submit a PR implementing this improvement.