Provide a statically linked package

I noticed that my CI takes a lot of time downloading dependencies for deadnix (namely libgcc, glibc and their dependencies). I think this could be avoided by using a binary that is statically linked against musl. Ideally this could be provided as a flake output.

Start by inspecting the flake output and packaging configuration for the deadnix binary. Determine how to provide a musl-linked static package that avoids libgcc, glibc, and their dependencies, then verify that the new flake output builds and is usable in CI.

Written by the indexing model from the issue text.