Add HTML reporting

[iadgovuser1]

Add an HTML report that could be handed to firewall admins. Top section would be a table containing Blocked, UnblockUrl, DnsAliases, IpAddresses, IpRange (see #2), and Description. Bottom section could be verbose output from the command. https://docs.microsoft.com/en-us/powershell/module/microsoft.powershell.utility/convertto-html