Provide statically linked linux pre-releases

[TeofilC]

Summary

Currently a pre-release tarball contains a cabal executable that has dynamic library dependencies on zlib and gmp (along with glibc).

This means that folks on statically linked (eg, alpine), or oddly linked platforms (looking at you Nix/NixOS), can't directly use them.

Suggestion

Let's additionally make available a statically linked binary.

I'm not sure if this would require a lot of work to get working on CI but I'd be happy to take a look.

[ulysses4ever]

I'd be happy to review and approve such PR if it's submitted.