refactor schedule view and cleaning

lib/pages/device_managment/water_heater/widgets/schedule_header.dart

@@ -0,0 +1,46 @@
+import 'package:flutter/material.dart';
+import 'package:syncrow_web/utils/color_manager.dart';
+
+class ScheduleHeader extends StatelessWidget {
+  const ScheduleHeader({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return Row(
+      mainAxisAlignment: MainAxisAlignment.spaceBetween,
+      children: [
+        const SizedBox(),
+        Text(
+          'Scheduling',
+          style: TextStyle(
+            fontWeight: FontWeight.bold,
+            fontSize: 22,
+            color: ColorsManager.dialogBlueTitle,
+          ),
+        ),
+        Container(
+          width: 25,
+          decoration: BoxDecoration(
+            color: Colors.transparent,
+            shape: BoxShape.circle,
+            border: Border.all(
+              color: Colors.grey,
+              width: 1.0,
+            ),
+          ),
+          child: IconButton(
+            padding: const EdgeInsets.all(1),
+            icon: const Icon(
+              Icons.close,
+              color: Colors.grey,
+              size: 18,
+            ),
+            onPressed: () {
+              Navigator.of(context).pop();
+            },
+          ),
+        ),
+      ],
+    );
+  }
+}