[RFC]: add `@stdlib/array/base/cusome`

[kgryte]

Description

This RFC proposes adding the package @stdlib/array/base/cusome, which cumulatively tests whether at least n array elements in a provided array are truthy. The function should return a new generic array. The package should also provide an #assign API for setting output values in a provided output array.

var x = [ false, false, false, true, true ];

var y1 = cusome( x, 2 );
// returns [ false, false, false, false, true ]

var y2 = [ false, null, false, null, false, null, false, null, false, null ];
var out = cusome.assign( x, 2, y2, 2, 0 );
// returns [ false, null, false, null, false, null, false, null, true, null ]

where the assign API supports an offset and stride (see, e.g., @stdlib/array/base/take).

Both APIs should support accessor arrays (see, e.g., @stdlib/array/base/take).

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Checklist

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

[vr-varad]

@kgryte feeling great to be here again!!! I wanted to work on this issue.

[kgryte]

@vr-varad Thanks for volunteering to work on this. Feel free to submit a PR. There's already some precedent with array/base/cuevery and array/base/cuany.