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/misc/vim-plugins/overrides.nix

@@ -231,7 +231,7 @@ self: super: {
   });
 
   vimsence = super.vimsence.overrideAttrs(old: {
-    meta = with stdenv.lib; {
+    meta = with lib; {
       description = "Discord rich presence for Vim";
       homepage = "https://github.com/hugolgst/vimsence";
       maintainers = with stdenv.lib.maintainers; [ hugolgst ];
@@ -321,7 +321,7 @@ self: super: {
       # remove unnecessary duplicated bin wrapper script
       rm -r plugin/vimacs
     '';
-    meta = with stdenv.lib; {
+    meta = with lib; {
       description = "Vim-Improved eMACS: Emacs emulation plugin for Vim";
       homepage = "http://algorithm.com.au/code/vimacs";
       license = licenses.gpl2Plus;
@@ -557,7 +557,7 @@ self: super: {
       ln -s ${ycmd}/lib/ycmd third_party
     '';
 
-    meta = with stdenv.lib; {
+    meta = with lib; {
       description = "A code-completion engine for Vim";
       homepage = "https://github.com/Valloric/YouCompleteMe";
       license = licenses.gpl3;