Add copyright headers

Author: Anthony Staples

src/WorkerIndexing/BindingInformation.cs

@@ -1,4 +1,9 @@
-using Microsoft.Azure.WebJobs.Script.Grpc.Messages;
+//
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+//
+
+using Microsoft.Azure.WebJobs.Script.Grpc.Messages;
 using Newtonsoft.Json;
 using Newtonsoft.Json.Linq;
 using System;

src/WorkerIndexing/FunctionInformation.cs

@@ -1,4 +1,9 @@
-using Microsoft.Azure.WebJobs.Script.Grpc.Messages;
+//
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+//
+
+using Microsoft.Azure.WebJobs.Script.Grpc.Messages;
 using System.Collections.Generic;
 
 namespace Microsoft.Azure.Functions.PowerShellWorker.WorkerIndexing