Function silc_sftp_server_set_monitor
SYNOPSIS
void silc_sftp_server_set_monitor(SilcSFTP sftp,
SilcSFTPMonitors monitors,
SilcSFTPMonitor monitor,
void *context);
DESCRIPTION
Sets monitor callback to monitor various request sent by an client.
When request that has been set in the `monitors' is received the
monitor callback will be called to notify the caller.