Netbox now supports Autonomous Systems Numbers.
- We should move https://wikitech.wikimedia.org/wiki/IP_and_AS_allocations#Private_AS to https://netbox.wikimedia.org/ipam/asns/
- Move ASN from Providers' text field to the AS model, maybe removing as well the AS we don't need to document (as the AS model require a RIR for each AS, which is cumbersome)
Which will probably help for per device ASN, see T305126#7941476