Add licence header to web-request-utils.psm1

Author: plemarquand

.github/workflows/scripts/windows/web-request-utils.psm1

@@ -1,4 +1,15 @@
-# WebRequestUtils.psm1
+##===----------------------------------------------------------------------===##
+##
+## This source file is part of the Swift.org open source project
+##
+## Copyright (c) 2024 Apple Inc. and the Swift project authors
+## Licensed under Apache License v2.0 with Runtime Library Exception
+##
+## See https://swift.org/LICENSE.txt for license information
+## See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
+##
+##===----------------------------------------------------------------------===##
+
 # Shared utilities for web requests with retry logic
 
 <#
@@ -31,12 +42,9 @@ function Invoke-WebRequestWithRetry {
     param(
         [Parameter(Mandatory=$true)]
         [string]$Uri,
-
         [Parameter(Mandatory=$true)]
         [string]$OutFile,
-
         [int]$MaxRetries = 10,
-
         [int]$BaseDelay = 1
     )