Add changeConnectionUri action for query (#1227)

* added wip rename query

* added first rename test

* added missing query handling and two new tests

* removed ServiceDispose

* added change to owneruri.

* made fields private, used accessor methods

* added readonly flag back

* added didSave to sqltools.servicelayer

* fix for docsavecallbacks

* removed tryremove

* test disconnect in queryExecutionService

* removed debug message working query.

* added comment to handlerenamerequest

* added uri replacement function

* removed duplicate removemap function

* added minor fixes

* changed connectionOwnerUri to getter setter

* removed handledidsave and added setters

* removed additional save parts

* fixed space issues

* more fixes for spaces

* restored spaces

* fixed workspaceservice

* Update TextDocument.cs

* changed renameRequest into notification WIP

* restored textdocument

* restored textdocument.cs

* added rightwards arrow

* renamed rename to ChangeConnectionUri

* added more renames

* rename changeconnectionuri to changeuri

* renamed file names

* Revert "renamed file names"

This reverts commit 55228e65025b5179b15ae9a0adc095d95538723d.

* Revert "rename changeconnectionuri to changeuri"

This reverts commit 23f3813f609e3947f103e057f7c0919184075bdc.

* removed logging message and other small changes

* renamed class and method

src/Microsoft.SqlTools.ServiceLayer/QueryExecution/Contracts/ConnectionUriChangedNotification.cs

@@ -0,0 +1,24 @@
+//
+// 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.Hosting.Protocol.Contracts;
+
+namespace Microsoft.SqlTools.ServiceLayer.QueryExecution.Contracts
+{
+    /// <summary>
+    /// Parameters for the connection uri changed notification.
+    /// </summary>
+    public class ConnectionUriChangedParams
+    {
+        public string NewOwnerUri { get; set; }
+        public string OriginalOwnerUri { get; set; }
+    }
+    public class ConnectionUriChangedNotification
+    {
+        public static readonly 
+            EventType<ConnectionUriChangedParams> Type =
+            EventType<ConnectionUriChangedParams>.Create("query/connectionUriChanged");
+    }
+}