feat: add JavaScript implementation for `iter/cartesian-power`

[TheNourhan]

Resolves #1336

Description

What is the purpose of this pull request?

This pull request:

• Implementation of the iterCartesianPower function in the lib folder.
• Documentation updates in the docs folder:
  • Added REPL usage examples to docs/repl.txt.
  • Created TypeScript type definitions in the docs/types folder.
• Updated README.md.
• Added benchmarks to the benchmark folder.
• Added unit tests to the test folder.

Related Issues

Does this pull request have any related issues?

This pull request:

• resolves #1336

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.

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