step one, cleaning up get_interface_info(), move pfctl calls to configd. for https://github.com/opnsense/core/issues/1662

Replace get_configured_ip_addresses() and get_configured_ipv6_addresses() with a more pragmatic approach, both are used to detect if an address is already configured, which gets quite sloppy when having a large number of interface
s configured.

This change probes all configured interfaces at once, and returns the full list, stripping quite some magic in the process.

Because the indexing is changed, we need to change the consumers as well here.

rc.recover doesn't work like that then, need to move to /bin/sh.

PR: https://forum.opnsense.org/index.php?topic=5213.0

If a field isn't required and the user sets it with a faulty value, it would pass because it didn't know it wasn't set before user input.
There where two issues, first one, not knowing it was in init state (solved with internalFieldLoaded), next all field types should have used actionPostLoadingEvent to customize loading behaviour.

There are UX issues with this anyway and the missing license
worries me too.

Adjust tabs to spaces, copyright headers and add missing one from
restore script as per:

https://github.com/pfsense/pfsense/commit/7d7ce752

filter/port alias, allow ranges in the form of 80-100, replace with 80:100. closes https://github.com/opnsense/core/issues/1529