plausible: take take-plausible-maintainership

nixos/modules/services/web-apps/plausible.nix

···
     ];
   };
 
-  meta.maintainers = with maintainers; [ ];
+  meta.maintainers = with maintainers; [ xanderio ];
   meta.doc = ./plausible.md;
 }

pkgs/servers/web-apps/plausible/default.nix

···
     changelog = "https://github.com/plausible/analytics/blob/${src.rev}/CHANGELOG.md";
     description = " Simple, open-source, lightweight (< 1 KB) and privacy-friendly web analytics alternative to Google Analytics";
     mainProgram = "plausible";
-    maintainers = with maintainers; [ ];
+    maintainers = with maintainers; [ xanderio ];
     platforms = platforms.unix;
   };
 }