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/tools/misc/git-town/default.nix

@@ -1,4 +1,4 @@
-{ stdenv, buildGoPackage, fetchFromGitHub }:
+{ lib, stdenv, buildGoPackage, fetchFromGitHub }:
 
 buildGoPackage rec {
   pname = "git-town";
@@ -14,7 +14,7 @@ buildGoPackage rec {
 
   buildFlagsArray = [ "-ldflags=-X github.com/git-town/git-town/src/cmd.version=v${version} -X github.com/git-town/git-town/src/cmd.buildDate=nix" ];
 
-  meta = with stdenv.lib; {
+  meta = with lib; {
     description = "Generic, high-level git support for git-flow workflows";
     homepage = "https://www.git-town.com/";
     maintainers = [ maintainers.allonsy maintainers.blaggacao ];