Initial Client/Server Communication

#1
Followed the MagicOnion quickstart guide, borrowing code from the chat sample app to get something working

Assets/Scripts/MagicOnion/Utils/TaskCompletionSourceEx.cs

@@ -0,0 +1,24 @@
+using System;
+using System.Threading.Tasks;
+
+namespace MagicOnion.Utils
+{
+    internal interface ITaskCompletion
+    {
+        bool TrySetException(Exception ex);
+        bool TrySetCanceled();
+    }
+
+    internal class TaskCompletionSourceEx<T> : TaskCompletionSource<T>, ITaskCompletion
+    {
+        bool ITaskCompletion.TrySetCanceled()
+        {
+            return this.TrySetCanceled();
+        }
+
+        bool ITaskCompletion.TrySetException(Exception ex)
+        {
+            return this.TrySetException(ex);
+        }
+    }
+}