Update to add support for interactive sub-processes

(Tokens) > run cmd.exe
[+] Starting cmd.exe
[*] Note: The prompt is currently missing for input

Microsoft Windows [Version 10.0.17763.379]
(c) 2018 Microsoft Corporation. All rights reserved.

whoami
C:\Tokenvator\Tokenvator\bin\Release-Net45>whoami
windows10pro\0xbadjuju

dir
C:\Tokenvator\Tokenvator\bin\Release-Net45>dir
 Volume in drive C has no label.
 Volume Serial Number is A624-B8DD

 Directory of C:\Tokenvator\Tokenvator\bin\Release-Net45

03/22/2019  11:38 AM    <DIR>          .
03/22/2019  11:38 AM    <DIR>          ..
09/15/2018  02:29 AM         3,010,560 System.Management.Automation.dll
02/21/2019  11:45 AM               161 Tokenvator.exe.config
03/22/2019  11:28 AM           112,128 Tokenvator.pdb
03/22/2019  11:28 AM           117,760 Tokenvator.exe
               4 File(s)      3,240,609 bytes
               2 Dir(s)  84,676,734,976 bytes free

exit
C:\Tokenvator\Tokenvator\bin\Release-Net45>exit

(Tokens) > run powershell.exe
[+] Starting powershell.exe
[*] Note: The prompt is currently missing for input

Windows PowerShell
Copyright (C) Microsoft Corporation. All rights reserved.

gci
PS C:\Tokenvator\Tokenvator\bin\Release-Net45> gci


    Directory: C:\Tokenvator\Tokenvator\bin\Release-Net45


Mode                LastWriteTime         Length Name
----                -------------         ------ ----
-a----        9/15/2018   2:29 AM        3010560 System.Management.Automation.dll
-a----        2/21/2019  10:45 AM            161 Tokenvator.exe.config
-a----        3/22/2019  11:28 AM         112128 Tokenvator.pdb
-a----        3/22/2019  11:28 AM         117760 Tokenvator.exe


exit
PS C:\Tokenvator\Tokenvator\bin\Release-Net45> exit