WiP storage for modules

Core/Data/BotUser.cs

@@ -0,0 +1,25 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+
+namespace Kruzya.TelegramBot.Core.Data
+{
+    public class BotUser
+    {
+        /// <summary>
+        /// The unique bot user identifier.
+        /// </summary>
+        [Key]
+        public Guid BotUserId { get; set; }
+        
+        /// <summary>
+        /// The chat identifier where this user is related.
+        /// </summary>
+        public long ChatId { get; set; }
+
+        /// <summary>
+        /// The Telegram User identifier.
+        /// </summary>
+        public int UserId { get; set; }
+    }
+}