Add a stage for configuring users

scripts/Windows/OS/Install.ps1

@@ -426,6 +426,9 @@ $null = New-Module {
                     }
                     ([SetupStage]::CreateUser) {
                         Start-ValhallaUserSetup;
+                        Set-Stage ([SetupStage]::ConfigureUser);
+                    }
+                    ([SetupStage]::ConfigureUser) {
                         Set-IsFinished $true;
                     }
                 }