chore(nix): read Hunk version from package.json

Author: m4r1vs

nix/package.nix

@@ -1,7 +1,10 @@
-{ bun2nix, ... }:
+{ bun2nix, lib, ... }:
+let
+  packageJson = lib.importJSON ../package.json;
+in
 bun2nix.mkDerivation {
   pname = "hunkdiff";
-  version = "0.10.0";
+  version = packageJson.version;
 
   src = ../.;