Single URI NTLM Info Enum

This PR adds support to the existing ntlm_info_enumeration module to allow a single user-specified URI to be tested without needing to edit an external file.  The default behavior is to use the file like the original module did.

Easiest way to test this is to target your favorite OWA server and ensure the default settings finds a valid URI to retrieve NTLM information from, then set that URI to the TARGET option and change TARGETTYPE to URI.