i3status: add stapelberg as maintainer

I wrote i3status and am using it (in NixOS) :)

pkgs/applications/window-managers/i3/status.nix

@@ -47,7 +47,7 @@ stdenv.mkDerivation rec {
   meta = {
     description = "Generates a status line for i3bar, dzen2, xmobar or lemonbar";
     homepage = "https://i3wm.org";
-    maintainers = [ ];
+    maintainers = with lib.maintainers; [ stapelberg ];
     license = lib.licenses.bsd3;
     platforms = lib.platforms.all;
     mainProgram = "i3status";