Move managed client to separate nuget.

Extensions/MQTTnet.Extensions.ManagedClient/ReconnectionResult.cs

@@ -0,0 +1,9 @@
+namespace MQTTnet.Extensions.ManagedClient
+{
+    public enum ReconnectionResult
+    {
+        StillConnected,
+        Reconnected,
+        NotConnected
+    }
+}