Sync RPKI Trust Anchor constraints to nro-delegated-stats

Turns out that registry at https://www.iana.org/assignments/as-numbers/as-numbers.xml
is an incomplete one, where only 'new' assignments are listed. In the
past this registry used to list all ASNs, but the RIRs asked IANA to
revert to not being very detailed...

There is another source of truth, the 'nro-delegated-stats' file at
https://ftp.ripe.net/pub/stats/ripencc/nro-stats/latest/nro-delegated-stats
this is updated daily and composed of information from each RIR.

Summary of changes:

* LACNIC manages a more ASNs than previously known:
- allow those ASNs for LACNIC
- deny those for RIPE, APNIC, ARIN

* AFRINIC's allow list was good (compared to nro-delegated-stats), but the
full set of AfriNIC ASNs wasn't denylisted for RIPE, ARIN, APNIC.

OK tb@

Add more RPKI TA constraints: LACNIC ASNs cannot transfer to/from other RIRs

OK tb@

Align the other RIRs with the recent clarifications from AFRINIC

Following https://lists.afrinic.net/pipermail/dbwg/2023-December/000496.html
Simply apply the inverse of 'afrinic.constraints' r1.2 to the other RIR files
(since no resources can be transferred from AFRINIC to any other RIRs).

OK tb@

Add markers

OK tb@

Impose constraints on RPKI Trust Anchors

See https://datatracker.ietf.org/doc/html/draft-snijders-constraining-rpki-trust-anchors
for more information.

Tested for a few months.

OK tb@ claudio@

Add more RPKI TA constraints: LACNIC ASNs cannot transfer to/from other RIRs

OK tb@

Align the other RIRs with the recent clarifications from AFRINIC

Following https://lists.afrinic.net/pipermail/dbwg/2023-December/000496.html
Simply apply the inverse of 'afrinic.constraints' r1.2 to the other RIR files
(since no resources can be transferred from AFRINIC to any other RIRs).

OK tb@

Add markers

OK tb@

Impose constraints on RPKI Trust Anchors

See https://datatracker.ietf.org/doc/html/draft-snijders-constraining-rpki-trust-anchors
for more information.

Tested for a few months.

OK tb@ claudio@

Align the other RIRs with the recent clarifications from AFRINIC

Following https://lists.afrinic.net/pipermail/dbwg/2023-December/000496.html
Simply apply the inverse of 'afrinic.constraints' r1.2 to the other RIR files
(since no resources can be transferred from AFRINIC to any other RIRs).

OK tb@

Add markers

OK tb@

Impose constraints on RPKI Trust Anchors

See https://datatracker.ietf.org/doc/html/draft-snijders-constraining-rpki-trust-anchors
for more information.

Tested for a few months.

OK tb@ claudio@