Add Arm64 to list of architectures in Module Initialization. (#4251)

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- [X] This pull request is related to an issue.
  - Resolves: #4169
-----

This PR addresses an issue that prevents the WinGet Cmdlets from loading
in an Arm64 PowerShell 7.x environment.
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src/PowerShell/scripts/Initialize-LocalWinGetModules.ps1

@@ -74,6 +74,7 @@ class WinGetModule
     {
         $x64Path = "$($this.Output)\$location\x64\"
         $x86Path = "$($this.Output)\$location\x86\"
+        $arm64Path = "$($this.Output)\$location\arm64\"
         if (-not (Test-Path $x64Path))
         {
             New-Item $x64Path -ItemType directory
@@ -84,20 +85,28 @@ class WinGetModule
             New-Item $x86Path -ItemType directory
         }
 
+        if (-not (Test-Path $arm64Path))
+        {
+            New-Item $arm64Path -ItemType directory
+        }        
+
         foreach ($f in $files)
         {
             $copyErrors = $null
             Copy-Item "$buildRoot\x64\$config\$f" "$($this.Output)\$location\x64\" -Force -ErrorVariable copyErrors -ErrorAction SilentlyContinue
             $copyErrors | ForEach-Object { Write-Warning $_ }
             Copy-Item "$buildRoot\x86\$config\$f" "$($this.Output)\$location\x86\" -Force -ErrorVariable copyErrors -ErrorAction SilentlyContinue
             $copyErrors | ForEach-Object { Write-Warning $_ }
+            Copy-Item "$buildRoot\arm64\$config\$f" "$($this.Output)\$location\arm64\" -Force -ErrorVariable copyErrors -ErrorAction SilentlyContinue
+            $copyErrors | ForEach-Object { Write-Warning $_ }            
         }
     }
 
     [void]AddAnyCpuSpecificFilesToArch([string[]] $files, [string]$location, [string] $buildRoot, [string] $config)
     {
         $x64Path = "$($this.Output)\$location\x64\"
         $x86Path = "$($this.Output)\$location\x86\"
+        $arm64Path = "$($this.Output)\$location\arm64\"        
         if (-not (Test-Path $x64Path))
         {
             New-Item $x64Path -ItemType directory
@@ -108,13 +117,20 @@ class WinGetModule
             New-Item $x86Path -ItemType directory
         }
 
+        if (-not (Test-Path $arm64Path))
+        {
+            New-Item $arm64Path -ItemType directory
+        }
+
         foreach ($f in $files)
         {
             $copyErrors = $null
             Copy-Item "$buildRoot\AnyCpu\$config\$f" "$($this.Output)\$location\x64\" -Force -ErrorVariable copyErrors -ErrorAction SilentlyContinue
             $copyErrors | ForEach-Object { Write-Warning $_ }
             Copy-Item "$buildRoot\AnyCpu\$config\$f" "$($this.Output)\$location\x86\" -Force -ErrorVariable copyErrors -ErrorAction SilentlyContinue
             $copyErrors | ForEach-Object { Write-Warning $_ }
+            Copy-Item "$buildRoot\AnyCpu\$config\$f" "$($this.Output)\$location\arm64\" -Force -ErrorVariable copyErrors -ErrorAction SilentlyContinue
+            $copyErrors | ForEach-Object { Write-Warning $_ }
         }
     }
 }