add basic app

Chatter/Dto/MessageDto.cs

@@ -0,0 +1,17 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Chatter.Dto
+{
+    public class MessageDto
+    {
+        public string Text { set; get; }
+
+        public DateTime CreateDate { set; get; }
+        
+        public string User { set; get; }
+    }
+}