clean up

lib/domain/entities/rate.dart

@@ -0,0 +1,31 @@
+class Rate {
+  String id;
+  String name;
+  String description;
+  String fromTime;
+  String toTime;
+  int price;
+
+  Rate(
+      {this.id,
+      this.name,
+      this.description,
+      this.fromTime,
+      this.toTime,
+      this.price,});
+
+  factory Rate.fromMap(Map<String, dynamic> map, String id) {
+    return Rate(
+        id: id,
+        name: map['name'],
+        description: map['description'],
+        fromTime: map['from_time'],
+        toTime: map['to_time'],
+        price: map['price'],);
+  }
+
+  @override
+  String toString() {
+    return 'Rate{id:$id, name:$name,description:$description,fromTime:$fromTime,toTime:$toTime}';
+  }
+}