Add Webhooks in store's settings

BTCPayServer.Client/Models/WebhookEvent.cs

@@ -0,0 +1,21 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
+using Newtonsoft.Json.Linq;
+
+namespace BTCPayServer.Client.Models
+{
+    public class WebhookEvent
+    {
+        public string DeliveryId { get; set; }
+        public string OrignalDeliveryId { get; set; }
+        [JsonConverter(typeof(StringEnumConverter))]
+        public WebhookEventType Type { get; set; }
+        [JsonConverter(typeof(NBitcoin.JsonConverters.DateTimeToUnixTimeConverter))]
+        public DateTimeOffset Timestamp { get; set; }
+        [JsonExtensionData]
+        public IDictionary<string, JToken> AdditionalData { get; set; }
+    }
+}