Add ATAC, the modern TUI API Client

[Julien-cpsn]

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Repo or homepage link:

https://github.com/Julien-cpsn/ATAC

Description:

ATAC is Arguably a Terminal API Client. Feature-full, free, open-source, offline and account-less.

Why I think it's awesome:

ATAC aims to take the best of Postman/Insomnia/Bruno but without all the "online only" and GUI drawbacks. Also, ATAC will soon be 99% usable with CLI aside of TUI. All of that within 4 Mb of RAM.