Add Webhooks in store's settings

BTCPayServer.Data/Data/WebhookDeliveryData.cs

@@ -0,0 +1,36 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+using System.Text;
+using Microsoft.EntityFrameworkCore;
+
+namespace BTCPayServer.Data
+{
+    public class WebhookDeliveryData
+    {
+        [Key]
+        [MaxLength(25)]
+        public string Id { get; set; }
+        [MaxLength(25)]
+        [Required]
+        public string WebhookId { get; set; }
+        public WebhookData Webhook { get; set; }
+
+        [Required]
+        public DateTimeOffset Timestamp
+        {
+            get; set;
+        }
+
+        [Required]
+        public byte[] Blob { get; set; }
+        internal static void OnModelCreating(ModelBuilder builder)
+        {
+            builder.Entity<WebhookDeliveryData>()
+                .HasOne(o => o.Webhook)
+                .WithMany(a => a.Deliveries).OnDelete(DeleteBehavior.Cascade);
+            builder.Entity<WebhookDeliveryData>().HasIndex(o => o.WebhookId);
+        }
+    }
+}