Simplify types of array/slice and array/base/slice via use of generic type parameter

[Planeshifter]

Description

What is the purpose of this pull request?

This pull request:

• simplifies the types of array/slice and array/base/slice through the use of generic type parameters.

Related Issues

Does this pull request have any related issues?

No.

Questions

Any questions for reviewers of this pull request?

No.

Other

Any other information relevant to this pull request? This may include screenshots, references, and/or implementation notes.

No.

Checklist

Please ensure the following tasks are completed before submitting this pull request.

• [x] Read, understood, and followed the contributing guidelines.

---

@stdlib-js/reviewers