Updated help syntax for sessions and added key verification for sessions
Set-SCPFile  support fingerprint management.
Added exception for when key does not exist set-scpfile
Get-SCPFile now checks for host fingerprit
Added progress for SCP Download
Added download process when using key authentication to get-scpfile
Upload progress message for Set-SCPFile
Update cmdlet dll, use event filename for progess and checking for folder existence before upload