valw: Noctalia plugin (bar button in g2, toolbar panel on Mod+Shift+T)

modules/home/home-valw.ulu.nix

@@ -9,6 +9,8 @@
         enable = true;
         # Checked by valw itself when the configuration is built.
         settings.capture.window_shadow = true;
+        # A bar button, the toolbar as a Noctalia panel, a control-center tile.
+        noctalia.enable = true;
       };
     };
 }