Allow setting the windows arch for the vcpkg installation script

Make the Windows vcpkg provisioning script configurable, so scripts
that use it may select the architecture using the 'arch' argument.

Change-Id: Id6180866ed03a9a15ec9b907c9be5545a04ea879
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>

coin/provisioning/common/windows/install-vcpkg.ps1

@@ -1,5 +1,7 @@
 # Copyright (C) 2023 The Qt Company Ltd.
 # SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
+param([string]$arch="x64")
+
 . "$PSScriptRoot\helpers.ps1"
 
 # This script will install vcpkg
@@ -26,9 +28,19 @@ $n = $n.Split('=')
 $vcpkgExeReleaseTag = $n[1]
 $nonDottedReleaseTag = $vcpkgExeReleaseTag.replace('-', "")
 
-$vcpkgExeOfficialUrl = "https://github.com/microsoft/vcpkg-tool/releases/download/$vcpkgExeReleaseTag/vcpkg.exe"
-$vcpkgExeCacheUrl = "\\ci-files01-hki.ci.qt.io\provisioning\vcpkg\vcpkg-$nonDottedReleaseTag-windows-x64.exe"
-$vcpkgExeSHA1 = "F74DCDE7F6F5082EF6DC31FED486FAD69BE8D442"
+$suffix = "-$arch"
+if($arch -eq "x64") {
+    $suffix = ""
+}
+
+if($arch -eq "x64") {
+    $vcpkgExeSHA1 = "F74DCDE7F6F5082EF6DC31FED486FAD69BE8D442"
+} elseif($arch -eq "arm64") {
+    $vcpkgExeSHA1 = "75049DC9A6FB813EFB7B48B2140DE067E73E977C"
+}
+
+$vcpkgExeOfficialUrl = "https://github.com/microsoft/vcpkg-tool/releases/download/$vcpkgExeReleaseTag/vcpkg$suffix.exe"
+$vcpkgExeCacheUrl = "\\ci-files01-hki.ci.qt.io\provisioning\vcpkg\vcpkg-$nonDottedReleaseTag-windows-$arch.exe"
 $vcpkgExe = "C:\Windows\Temp\vcpkg.exe"
 
 Download "$vcpkgExeOfficialUrl" "$vcpkgExeCacheUrl" "$vcpkgExe"