added chat table

Controllers/MessagesController.cs

@@ -0,0 +1,25 @@
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.SignalR.Infrastructure;
+using LiveGameFeed.Hubs;
+using LiveGameFeed.Models;
+
+namespace LiveGameFeed.Controllers
+{
+    [Route("api/[controller]")]
+    public class MessagesController : ApiHubController<Broadcaster>
+    {
+        public MessagesController(
+            IConnectionManager signalRConnectionManager)
+        : base(signalRConnectionManager)
+        {
+
+        }
+
+        // POST api/messages
+        [HttpPost]
+        public void Post([FromBody]ChatMessage message)
+        {
+            this.Clients.Group(message.MatchId.ToString()).addChatMessage(message);
+        }
+    }
+}