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/networking/feedreaders/feedreader/default.nix

@@ -1,4 +1,4 @@
-{ stdenv, fetchFromGitHub, nix-update-script, meson, ninja, pkgconfig, vala, gettext, python3
+{ lib, stdenv, fetchFromGitHub, nix-update-script, meson, ninja, pkgconfig, vala, gettext, python3
 , appstream-glib, desktop-file-utils, wrapGAppsHook, gnome-online-accounts
 , gtk3, libgee, libpeas, librest, webkitgtk, gsettings-desktop-schemas, pantheon
 , curl, glib, gnome3, gst_all_1, json-glib, libnotify, libsecret, sqlite, gumbo, libxml2
@@ -38,7 +38,7 @@ stdenv.mkDerivation rec {
     };
   };
 
-  meta = with stdenv.lib; {
+  meta = with lib; {
     description = "A modern desktop application designed to complement existing web-based RSS accounts";
     homepage = "https://jangernert.github.io/FeedReader/";
     license = licenses.gpl3Plus;