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/shells/bash/bash-completion/default.nix

@@ -1,4 +1,4 @@
-{ stdenv, fetchurl
+{ lib, stdenv, fetchurl
 , fetchpatch
 , autoreconfHook
 , perl
@@ -63,7 +63,7 @@ stdenv.mkDerivation rec {
     sed -i -e 's/readlink -f/readlink/g' bash_completion completions/*
   '';
 
-  meta = with stdenv.lib; {
+  meta = with lib; {
     homepage = "https://github.com/scop/bash-completion";
     description = "Programmable completion for the bash shell";
     license = licenses.gpl2Plus;