gwe: add setuptools for python 3.12

GWE still depends on distutils, which was removed in Python 3.12.
setuptools ships with a copy of distutils, so we can use it as a
workaround until GWE is fixed.

pkgs/tools/misc/gwe/default.nix

@@ -29,6 +29,7 @@ let
    rx
    gtk3
    reactivex
+   setuptools
  ]);
 in stdenv.mkDerivation rec {
   pname = "gwe";