Unify config into shell.json and add Noctalia plugin support

default/quickshell/omarchy-shell/Commons/Time.qml

@@ -0,0 +1,18 @@
+pragma Singleton
+import QtQuick
+
+// Noctalia compat shim.
+QtObject {
+  function getFormattedTimestamp() {
+    return new Date().toISOString()
+  }
+
+  function nowMs() {
+    return Date.now()
+  }
+
+  function formatDate(date, fmt) {
+    if (!date) date = new Date()
+    return Qt.formatDateTime(date, fmt || "yyyy-MM-dd HH:mm:ss")
+  }
+}