Initial commit of SqlTools Service API

ServiceHost/LanguageServer/ClientCapabilities.cs

@@ -0,0 +1,23 @@
+//
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+//
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Microsoft.PowerShell.EditorServices.Protocol.LanguageServer
+{
+    /// <summary>
+    /// Defines a class that describes the capabilities of a language
+    /// client.  At this time no specific capabilities are listed for
+    /// clients.
+    /// </summary>
+    public class ClientCapabilities
+    {
+    }
+}
+