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/development/python-modules/twitter-common-lang/default.nix

@@ -1,4 +1,4 @@
-{ stdenv
+{ lib, stdenv
 , buildPythonPackage
 , fetchPypi
 }:
@@ -12,7 +12,7 @@ buildPythonPackage rec {
     sha256 = "6e967ca2b5bb96ea749d21052f45b18e37deb5cc160eb12c64a8f1cb9dba7a22";
   };
 
-  meta = with stdenv.lib; {
+  meta = with lib; {
     description = "Twitter's 2.x / 3.x compatibility swiss-army knife";
     homepage    = "https://twitter.github.io/commons/";
     license     = licenses.asl20;