events: add once method to use promises with EventEmitter

This change adds a EventEmitter.once() method that wraps ee.once in a
promise.

Co-authored-by: David Mark Clements <david.mark.clements@gmail.com>

PR-URL: https://github.com/nodejs/node/pull/26078


Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Gus Caplan <me@gus.host>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Anatoli Papirovski <apapirovski@mac.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Сковорода Никита Андреевич <chalkerx@gmail.com>