Fun not-so-known fact: if you skip the root password chooser during the installation and just create a user, it will install and set up sudo automatically.

There was this as a full-fledged service (at least 10y ago): https://github.com/rundeck/rundeck

(I've just found out that it was acquired by NewRelic.)

According to https://github.com/awesome-selfhosted/awesome-selfhosted, there's Eonza ( https://www.eonza.org/ ).

Real-life Krillin