Addressing code review feedback

src/Microsoft.SqlTools.ServiceLayer/Connection/Contracts/ConnectionChangedNotification.cs

@@ -0,0 +1,19 @@
+//
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+//
+
+using Microsoft.SqlTools.ServiceLayer.Hosting.Protocol.Contracts;
+
+namespace Microsoft.SqlTools.ServiceLayer.Connection.Contracts
+{
+    /// <summary>
+    /// ConnectionChanged notification mapping entry 
+    /// </summary>
+    public class ConnectionChangedNotification
+    {
+        public static readonly
+            EventType<ConnectionChangedParams> Type =
+            EventType<ConnectionChangedParams>.Create("connection/connectionchanged");
+    }
+}