Promote shell to its own top-level directory

shell/scripts/indicators/notification-silencing.sh

@@ -0,0 +1,8 @@
+#!/bin/bash
+
+state=$(omarchy-shell notifications isDnd 2>/dev/null || echo off)
+if [[ $state == "on" ]]; then
+  echo '{"text": "󰂛", "tooltip": "Notifications silenced", "class": "active"}'
+else
+  echo '{"text": ""}'
+fi