Get Azure functions operation (#1228)

* add GetAzureFunctions

* add tests

* cleanup

* check for quotes

* address other comments

* add logging and let error result get sent

* rename file

src/Microsoft.SqlTools.ServiceLayer/AzureFunctions/Contracts/GetAzureFunctionsRequest.cs

@@ -0,0 +1,39 @@
+//
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+//
+using System.Collections.Generic;
+using Microsoft.SqlTools.Hosting.Protocol.Contracts;
+using Microsoft.SqlTools.ServiceLayer.SchemaCompare.Contracts;
+using Microsoft.SqlTools.ServiceLayer.Utility;
+
+namespace Microsoft.SqlTools.ServiceLayer.AzureFunctions.Contracts
+{
+    /// <summary>
+    /// Parameters for getting the Azure functions in a file
+    /// </summary>
+    public class GetAzureFunctionsParams
+    {
+        /// <summary>
+        /// Gets or sets the filePath
+        /// </summary>
+        public string filePath { get; set; }
+    }
+
+    /// <summary>
+    /// Parameters returned from a get Azure functions request
+    /// </summary>
+    public class GetAzureFunctionsResult : ResultStatus
+    {
+        public string[] azureFunctions { get; set; }
+    }
+
+    /// <summary>
+    /// Defines the get Azure functions request
+    /// </summary>
+    class GetAzureFunctionsRequest
+    {
+        public static readonly RequestType<GetAzureFunctionsParams, GetAzureFunctionsResult> Type =
+            RequestType<GetAzureFunctionsParams, GetAzureFunctionsResult>.Create("azureFunctions/getAzureFunctions");
+    }
+}