The splash runs in its own STA runspace so its UI keeps animating while
the caller’s thread is busy building the main window or loading data.Returns an object exposing:
.Update($message) - update the status line (thread-safe)
.Close() - dismiss the splash and dispose the runspace
This cmdlet supports the common parameters: -Debug, -ErrorAction, -ErrorVariable, -InformationAction, -InformationVariable, -OutVariable, -OutBuffer, -PipelineVariable, -Verbose, -WarningAction, and -WarningVariable. For more information, see about_CommonParameters.