Add missing function

scripts/Common/Scripts/Software.ps1

@@ -73,6 +73,50 @@ $null = New-Module {
         }
     }
 
+    <#
+        .SYNOPSIS
+        Installs a setup package from the specified source.
+
+        .PARAMETER Source
+        The location of the setup package.
+
+        .PARAMETER ArgumentList
+        The arguments to pass to the setup package.
+
+        .PARAMETER Local
+        A value indicating whether the setup package is stored locally.
+    #>
+    function Install-SetupPackage {
+        param(
+            [string] $Source,
+            [string[]] $ArgumentList = @("/S"),
+            [switch] $Local
+        )
+
+        [string] $dir = $null;
+        [string] $filePath = $null;
+
+        if (-not ($Local.IsPresent)) {
+            $dir = New-TemporaryDirectory;
+            Write-Host "Determining the file name of ``$Source``…";
+            $fileName = ([uri]$Source).Segments[-1];
+            Write-Host "Found name ``$fileName``";
+            $filePath = Join-Path $dir $fileName;
+
+            Write-Host "Downloading setup file from ``$Source``";
+            Invoke-WebRequest $Source -OutFile $filePath;
+        } else {
+            $filePath = $Source;
+        }
+
+        Write-Host "Starting installation of ``$(Split-Path -Leaf $filePath)``";
+        Start-Process -Wait -WorkingDirectory (Split-Path -Parent $filePath) -FilePath $filePath -ArgumentList $ArgumentList;
+
+        if ($dir) {
+            Remove-Item -Recurse $dir;
+        }
+    }
+
     <#
         .SYNOPSIS
         Installs a package downloaded from ASUS.