treewide: Add passthru.updateScript to gnome pkgs

`updateScript` lets us update packages automatically.
For packages that are hosted on the gnome mirror it's very easy to add
that. Inspired by https://github.com/NixOS/nixpkgs/issues/36150

pkgs/development/tools/misc/msitools/default.nix

@@ -1,17 +1,23 @@
-{ stdenv, fetchurl, intltool, glib, pkgconfig, libgsf, libuuid, gcab, bzip2 }:
+{ stdenv, fetchurl, intltool, glib, pkgconfig, libgsf, libuuid, gcab, bzip2, gnome3 }:
 
 stdenv.mkDerivation rec {
+  pname = "msitools";
   version = "0.98";
-  name = "msitools-${version}";
 
   src = fetchurl {
-    url = "mirror://gnome/sources/msitools/${version}/${name}.tar.xz";
+    url = "mirror://gnome/sources/${pname}/${stdenv.lib.versions.majorMinor version}/${pname}-${version}.tar.xz";
     sha256 = "19wb3n3nwkpc6bjr0q3f1znaxsfaqgjbdxxnbx8ic8bb5b49hwac";
   };
 
   nativeBuildInputs = [ intltool pkgconfig ];
   buildInputs = [ glib libgsf libuuid gcab bzip2 ];
 
+  passthru = {
+    updateScript = gnome3.updateScript {
+      packageName = pname;
+    };
+  };
+
   meta = with stdenv.lib; {
     description = "Set of programs to inspect and build Windows Installer (.MSI) files";
     homepage = https://wiki.gnome.org/msitools;