Added support for websockets

MQTTnet.Core/Client/ConnectionType.cs

@@ -0,0 +1,14 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace MQTTnet.Core.Client
+{
+    public enum ConnectionTypes
+    {
+        TCP,
+        TLS,
+        WS,
+        WSS
+    }
+}

MQTTnet.Core/Client/MqttClientOptions.cs

@@ -24,5 +24,7 @@ namespace MQTTnet.Core.Client
         public TimeSpan DefaultCommunicationTimeout { get; set; } = TimeSpan.FromSeconds(10);
 
         public MqttProtocolVersion ProtocolVersion { get; set; } = MqttProtocolVersion.V311;
+
+        public ConnectionTypes ConnectionType { get; set; } = ConnectionTypes.TCP;
     }
 }