Assign official package maintainers

[diamondburned]

As the package is being added into more and more places, I would like to automate notifying maintainers of new releases to minimize surprises.

For this reason, I'm proposing the addition of a file, MAINTAINERS.json, that tracks the users that are considered maintainers of a certain repository. For example:

{
  "NixOS": ["@hmenke"],
  "AUR": ["@txtsd"]
}

Then, additional automation could be added once an issue is published where a new issue is made solely for tracking which repository has not been updated.

This is, of course, only here for maintainers who are interested in monitoring for new releases and updating their package files accordingly. It's not something that I will randomly assign to people, as this kind of work is largely best effort anyway.