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/os-specific/linux/wireguard/default.nix

@@ -1,4 +1,4 @@
-{ stdenv, fetchzip, kernel, perl, wireguard-tools, bc }:
+{ lib, stdenv, fetchzip, kernel, perl, wireguard-tools, bc }:
 
 # module requires Linux >= 3.10 https://www.wireguard.io/install/#kernel-requirements
 assert stdenv.lib.versionAtLeast kernel.version "3.10";
@@ -33,7 +33,7 @@ stdenv.mkDerivation rec {
     inherit (wireguard-tools) tests;
   };
 
-  meta = with stdenv.lib; {
+  meta = with lib; {
     inherit (wireguard-tools.meta) homepage license maintainers;
     description = "Kernel module for the WireGuard secure network tunnel";
     downloadPage = "https://git.zx2c4.com/wireguard-linux-compat/refs/";