Add abbreviated ASN descriptive name to generated scripts

[TechnologyClassroom]

As of now, asn-to-ipset-script.sh generates filenames in this syntax:

<ASN>-ipset-<YYYYMMDD>.sh

For example, building a list to block ZSCALER would look like this:

22616-ipset-20260504.sh

This would be an improvement:

22616-ipset-zscaler-20260504.sh

[TechnologyClassroom]

To do this, an additional optional dependency of https://github.com/jedisct1/iptoasn-webservice/ would need to be added to asn-to-ipset-script.sh borrowing code from ip-to-asn-info.sh (which is also in the repository).

The script has CIDR addresses instead of IPs, but it would be easy enough to do.

• If iptoasn-webservice is available...
  • Take one CIDR from the list.
  • Isolate an IP address.
  • Run the IP address through the API and save the description.
  • Reduce the description to the first handful of characters.
  • Make everything lower-case.
  • Add the string to the filename.