Add NDM and Qt installer types

Update Get-InstallerType.ps1 to recognize new installer tokens 'ndm', 'qt6', and 'qt5', mapping them to 'NonDarkMode', 'Qt6', and 'Qt5'. Also normalize switch-case formatting for improved readability; default behavior remains unchanged.

Author: aaronparker

Evergreen/Private/Get-InstallerType.ps1

@@ -7,13 +7,16 @@ function Get-InstallerType {
     )
 
     switch -Regex ($String.ToLower()) {
-        "min"          { $Type = "Minimal"; break }
-        "user"         { $Type = "User"; break }
-        "portable"     { $Type = "Portable"; break }
+        "min" { $Type = "Minimal"; break }
+        "user" { $Type = "User"; break }
+        "portable" { $Type = "Portable"; break }
         "no-installer" { $Type = "Portable"; break }
-        "debug"        { $Type = "Debug"; break }
-        "airgap"       { $Type = "Airgap"; break }
-        "winmsi"       { $Type = "MSI"; break }
+        "debug" { $Type = "Debug"; break }
+        "airgap" { $Type = "Airgap"; break }
+        "winmsi" { $Type = "MSI"; break }
+        "ndm" { $Type = "NonDarkMode"; break }
+        "qt6" { $Type = "Qt6"; break }
+        "qt5" { $Type = "Qt5"; break }
         default {
             Write-Verbose -Message "$($MyInvocation.MyCommand): Installer type not found in $String, defaulting to 'Default'."
             $Type = "Default"