treewide: with stdenv.lib; in meta -> with lib;

Part of: https://github.com/NixOS/nixpkgs/issues/108938

meta = with stdenv.lib;

is a widely used pattern. We want to slowly remove
the `stdenv.lib` indirection and encourage people
to use `lib` directly. Thus let’s start with the meta
field.

This used a rewriting script to mostly automatically
replace all occurances of this pattern, and add the
`lib` argument to the package header if it doesn’t
exist yet.

The script in its current form is available at
https://cs.tvl.fyi/depot@2f807d7f141068d2d60676a89213eaa5353ca6e0/-/blob/users/Profpatsch/nixpkgs-rewriter/default.nix

pkgs/applications/virtualization/virt-manager/default.nix

@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, python3Packages, intltool, file
+{ lib, stdenv, fetchurl, python3Packages, intltool, file
 , wrapGAppsHook, gtk-vnc, vte, avahi, dconf
 , gobject-introspection, libvirt-glib, system-libvirt
 , gsettings-desktop-schemas, glib, libosinfo, gnome3
@@ -56,7 +56,7 @@ python3Packages.buildPythonApplication rec {
   # Failed tests
   doCheck = false;
 
-  meta = with stdenv.lib; {
+  meta = with lib; {
     homepage = "http://virt-manager.org";
     description = "Desktop user interface for managing virtual machines";
     longDescription = ''