[9.16][CVE-2024-1737] Add a limit to the number of RRs in RRSets

Previously, the number of RRs in the RRSets were internally unlimited.
As the data structure that holds the RRs is just a linked list, and
there are places where we just walk through all of the RRs, adding an
RRSet with huge number of RRs inside would slow down processing of said
RRSets.

Add a configurable limit to cap the number of the RRs in a single RRSet.
This is enforced at the database (rbtdb, qpzone, qpcache) level and
configured with new max-records-per-rrset configuration option that can
be configured globally, per-view and per-zone.

(cherry picked from commit c5c4d00c38530390c9e1ae4c98b65fbbadfe9e5e)

Not a backport, closes https://gitlab.isc.org/isc-projects/bind9/-/issues/3405 for 9.16

Merge branch '3405-limit-the-number-of-resource-records-in-rrset-9.16' into 'bind-9.16'

See merge request isc-projects/bind9!9170