common: add gift card model

Streetwriters.Common/Models/GiftCard.cs

@@ -0,0 +1,29 @@
+using System.Text.Json.Serialization;
+using MongoDB.Bson;
+using MongoDB.Bson.Serialization.Attributes;
+using Streetwriters.Common.Interfaces;
+
+namespace Streetwriters.Common.Models
+{
+    public class GiftCard : IDocument
+    {
+        public GiftCard()
+        {
+            Id = ObjectId.GenerateNewId().ToString();
+        }
+
+        public string Code { get; set; }
+        public string OrderId { get; set; }
+        public string OrderIdType { get; set; }
+        public string ProductId { get; set; }
+        public string RedeemedBy { get; set; }
+        public long RedeemedAt { get; set; }
+        public long Timestamp { get; set; }
+        public long Term { get; set; }
+
+        [BsonId]
+        [BsonRepresentation(BsonType.ObjectId)]
+        [JsonIgnore]
+        public string Id { get; set; }
+    }
+}