Land our apex domains somewhere helpful

[drewr]

We have supporting domain properties that aren't used on their own, but in support of our products. Let's redirect them to useful places:

• datumproxy.net 👉 https://www.datum.net/docs/domain-dns/domains
• datumdomains.net 👉 https://www.datum.net/docs/ai-edge/overview
• datum-dns.net 👉 https://www.datum.net/docs/domain-dns/dns (all variants)

There are probably others, but start with a few so we have the configuration in place. We can update it as needed.