Add error handling for Azure Exceptions (#177)

* Add error handling for Azure Exceptions

* Add SRGen for string

* Add specific exception messages

* Move DefinitionResult class

* Add SqlLogin constant

* Add error scenarios

* revert timeout duration

* Modify tests

* Modify tests

* Add tests

* Revert live connection definition

* Modify DefinitionsHandlerWithNoConnectionTest

* fix test after merge

* Code review changes

* Code review changes

* Code review changes

src/Microsoft.SqlTools.ServiceLayer/LanguageServices/PeekDefinitionResult.cs

@@ -0,0 +1,28 @@
+//
+// 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.Workspace.Contracts;
+namespace Microsoft.SqlTools.ServiceLayer.LanguageServices
+{
+    /// <summary>
+    /// /// Result object for PeekDefinition
+    /// </summary>
+    public class DefinitionResult
+    {
+        /// <summary>
+        /// True, if definition error occured
+        /// </summary>
+        public bool IsErrorResult;
+
+        /// <summary>
+        /// Error message, if any
+        /// </summary>
+        public string Message { get; set; }
+
+        /// <summary>
+        /// Location object representing the definition script file
+        /// </summary>
+        public Location[] Locations;
+    }
+}