Add support for Ubuntu 24.04 LTS ("noble")

[DarrenCook]

Summary

CouchDB can't be installed on Ubuntu 24.04 LTS as there is no deb.

It has been the recommended long-term-support version for people to install since April, so is an obvious choice for servers.

Desired Behaviour

We want to be able to follow the documentation at:
https://docs.couchdb.org/en/latest/install/unix.html#enabling-the-apache-couchdb-package-repository

But it fails because "noble" is returned for ${VERSION_CODENAME}

Possible Solution

Add "Ubuntu 24.04 LTS" to the list at https://docs.couchdb.org/en/latest/install/unix.html#installation-using-the-apache-couchdb-convenience-binary-packages

And add the corresponding deb release, or course :-)

[big-r81]

Closing this as duplicate of #5077.