bpo-34977: Add Windows App Store package (GH-11027)

Also adds the PC/layout script for generating layouts on Windows.

Tools/msi/make_cat.ps1

@@ -0,0 +1,34 @@
+<#
+.Synopsis
+    Compiles and signs a catalog file.
+.Description
+    Given the CDF definition file, builds and signs a catalog.
+.Parameter catalog
+    The path to the catalog definition file to compile and
+    sign. It is assumed that the .cat file will be the same
+    name with a new extension.
+.Parameter description
+    The description to add to the signature (optional).
+.Parameter certname
+    The name of the certificate to sign with (optional).
+.Parameter certsha1
+    The SHA1 hash of the certificate to sign with (optional).
+#>
+param(
+    [Parameter(Mandatory=$true)][string]$catalog,
+    [string]$description,
+    [string]$certname,
+    [string]$certsha1,
+    [string]$certfile
+)
+
+$tools = $script:MyInvocation.MyCommand.Path | Split-Path -parent;
+Import-Module $tools\sdktools.psm1 -WarningAction SilentlyContinue -Force
+
+Set-Alias MakeCat (Find-Tool "makecat.exe") -Scope Script
+
+MakeCat $catalog
+if (-not $?) {
+    throw "Catalog compilation failed"
+}
+Sign-File -certname $certname -certsha1 $certsha1 -certfile $certfile -description $description -files @($catalog -replace 'cdf$', 'cat')