Add status model and fetch device statuses

Added a new StatusModel class to represent device statuses and implemented
functionality to fetch and update device statuses in the DevicesCubit and
DeviceModel classes. Also updated UI components to display device status
information.

lib/features/devices/model/status_model.dart

@@ -0,0 +1,23 @@
+class StatusModel {
+  String? code;
+  dynamic value;
+
+  StatusModel({
+    required this.code,
+    required this.value,
+  });
+
+  factory StatusModel.fromJson(Map<String, dynamic> json) {
+    return StatusModel(
+      code: json['code'],
+      value: json['value'],
+    );
+  }
+
+  Map<String, dynamic> toJson() {
+    return {
+      'code': code,
+      'value': value,
+    };
+  }
+}