Is your feature request related to a problem? Please describe.

In short:

Downloading 500mb+ of brew to install something to unzip a 2mb file is, of course, silly.

In long:

I run https://webinstall.dev and our thing is basically "instant installs from official builds, no dependencies, no sudo, no package manager, no change of accidentally borking your system".

I noticed that a few of the other packages we provide github installers for now provide .tar.zstd as an option and so I'd like to support that by providing unzstd like we do with xz - but I don't see any official builds other than Windows (here in GH Releases).

Describe the solution you'd like

Release amd64, aarch64 (and preferably armv6) builds for Linux and macOS via https://github.com/facebook/zstd/releases

Describe alternatives you've considered

In the short term we won't offer zstd as an installable thing because we have no official source for it.

In the long term, although we don't host 3rd-party builds, if this is "done" I could fork it and host assets at a 3rd party GitHub repo and note that zstd is an exception to our "official builds" policy.

Additional context

That is all. Have a great day.