util: add inspection getter option

Currently it is not possible to inspect getters. To prevent any side
effects this should not become a default but under lots of
circumstances it would still be useful to inspect getters. This way
it is possible to actively opt into inspecting those.

PR-URL: https://github.com/nodejs/node/pull/24852


Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>