* fix: unbroke import paths in EnchantmentMenu.cpp
* fix: patch nix flakes for new 4JLibs
* style: format nix flake
* refactor(nix): rely on build-linux.sh functions for nix builds
* fix(nix): patch dev shell for build-linux.sh
* feat(nix): derive package version from network version
Notably also adds some metadata files for NixOS
* add support for linux clang cross compiles
* add linux clang instructions
* un-capitalize Mob.horse.*
* update the description in flake.nix
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Co-authored-by: Loki <lokirautio@gmail.com>