treewide: clean up 'meta = with' pattern

This commit was created by a combination of scripts and tools:
- an ast-grep script to prefix things in meta with `lib.`,
- a modified nixf-diagnose / nixf combination to remove unused `with
lib;`, and
- regular nixfmt.

Co-authored-by: Wolfgang Walther <walther@technowledgy.de>

pkgs/development/python-modules/aiohttp/default.nix

@@ -164,11 +164,11 @@ buildPythonPackage rec {
     export TMPDIR="/tmp"
   '';
 
-  meta = with lib; {
+  meta = {
     changelog = "https://docs.aiohttp.org/en/${src.tag}/changes.html";
     description = "Asynchronous HTTP Client/Server for Python and asyncio";
-    license = licenses.asl20;
+    license = lib.licenses.asl20;
     homepage = "https://github.com/aio-libs/aiohttp";
-    maintainers = with maintainers; [ dotlambda ];
+    maintainers = with lib.maintainers; [ dotlambda ];
   };
 }