Adding internal recon/privesc privesc functions PowerShellMafia#40

Added the following recon functions written by Joe Bialek
(@JosephBialek):

- Find-4648Logons
- Find-4624Logons
- Find-AppLockerLogs
- Find-PSScriptsInPSAppLog
- Find-RDPClientConnections
- Get-ComputerDetails (Combines all of the above functions into a single
function)

Author: mattifestation