Merge pull request #247215 from wamserma/nm-applet-mainprogram

networkmanagerapplet: add meta.mainProgram

pkgs/tools/networking/networkmanager/applet/default.nix

···
     description = "NetworkManager control applet for GNOME";
     license = licenses.gpl2Plus;
     maintainers = with maintainers; [ ];
+    mainProgram = "nm-applet";
     platforms = platforms.linux;
   };
 }