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/science/math/cemu/default.nix

@@ -1,5 +1,5 @@
 { fetchFromGitHub
-, stdenv
+, lib, stdenv
 , mkDerivation
 , SDL2
 , libGL
@@ -42,7 +42,7 @@ mkDerivation rec {
     "gui/qt"
   ];
 
-  meta = with stdenv.lib; {
+  meta = with lib; {
     changelog = "https://github.com/CE-Programming/CEmu/releases/tag/v${version}";
     description = "Third-party TI-84 Plus CE / TI-83 Premium CE emulator, focused on developer features";
     homepage = "https://ce-programming.github.io/CEmu";