Add EmptyDevicesWidget to display message when no routines are available.

lib/features/scene/widgets/empty_devices_widget.dart

@@ -0,0 +1,22 @@
+import 'package:flutter/material.dart';
+import 'package:syncrow_app/utils/resource_manager/color_manager.dart';
+
+class EmptyDevicesWidget extends StatelessWidget {
+  const EmptyDevicesWidget({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return Padding(
+      padding: const EdgeInsets.symmetric(vertical: 48),
+      child: Text(
+        "No routines.\nEnable 'Show on Home Screen' to add routines",
+        textAlign: TextAlign.center,
+        style: TextStyle(
+          color: ColorsManager.grayColor,
+          fontWeight: FontWeight.w400,
+          fontSize: 12,
+        ),
+      ),
+    );
+  }
+}