src: snapshot loaders

This runs `lib/internal/bootstrap/loaders.js` before creating
the builtin snapshot and deserialize the loaders from the
snapshot in deserialization mode.

PR-URL: https://github.com/nodejs/node/pull/32984


Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Daniel Bevenius <daniel.bevenius@gmail.com>