stub out signalr sync hub

src/Hub/SyncHub.cs

@@ -0,0 +1,33 @@
+using System;
+using System.Threading.Tasks;
+using Bit.Core;
+using Microsoft.AspNetCore.Authorization;
+
+namespace Bit.Hub
+{
+    [Authorize("Application")]
+    public class SyncHub : Microsoft.AspNetCore.SignalR.Hub
+    {
+        public override async Task OnConnectedAsync()
+        {
+            var currentContext = new CurrentContext();
+            currentContext.Build(Context.User);
+            foreach(var org in currentContext.Organizations)
+            {
+                await Groups.AddToGroupAsync(Context.ConnectionId, $"Organization_{org.Id}");
+            }
+            await base.OnConnectedAsync();
+        }
+
+        public override async Task OnDisconnectedAsync(Exception exception)
+        {
+            var currentContext = new CurrentContext();
+            currentContext.Build(Context.User);
+            foreach(var org in currentContext.Organizations)
+            {
+                await Groups.RemoveFromGroupAsync(Context.ConnectionId, $"Organization_{org.Id}");
+            }
+            await base.OnDisconnectedAsync(exception);
+        }
+    }
+}