Initial commit of SqlTools Service API

ServiceHost/LanguageServer/Hover.cs

@@ -0,0 +1,37 @@
+//
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+//
+
+using Microsoft.PowerShell.EditorServices.Protocol.MessageProtocol;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Microsoft.PowerShell.EditorServices.Protocol.LanguageServer
+{
+    public class MarkedString
+    {
+        public string Language { get; set; }
+
+        public string Value { get; set; }
+    }
+
+    public class Hover
+    {
+        public MarkedString[] Contents { get; set; }
+
+        public Range? Range { get; set; }
+    }
+
+    public class HoverRequest
+    {
+        public static readonly
+            RequestType<TextDocumentPosition, Hover> Type =
+            RequestType<TextDocumentPosition, Hover>.Create("textDocument/hover");
+
+    }
+}
+