docs: mention 🍊 `tangerine` if the user needs a complete 1:1 replacement for `dns.promises.Resolver`?

[titanism]

Hey 👋 Just writing to express thanks for making dohdec – it made creating 🍊 Tangerine npm install tangerine possible. We shared thanks in our README too! Just passing this note along in case you also wanted to mention in dohdec's README this project. It uses dohdec under the hood!