ISC DHCP log emulation

name: ISC DHCP log emulation
about: Kea to generate logging similar ISC DCHP.

Some initial questions

• Are you sure your feature is not already implemented in the latest Kea version?
  Kea's forensic logging hooks library can be configured generate messages that look
  like ISC DHCP logging but DHCPDISCOVER/DHCPOFFER and SOLICIT/ADVERTISE
  packets are not logged.

Is your feature request related to a problem? Please describe.
As a help to folks who are planning to migrate from ISC DCHP to Kea it may be helpful if
Kea could be induced to produce logging that approximate those generated by ISC DCHP.

Describe the solution you'd like
There appear to be two ways forward:

1. Enhance Kea's forensic logging hooks library.
2. Generate new logging messages at severity INFO

Additional context See RT #22155