vm: introduce `cachedData`/`produceCachedData`

Introduce `cachedData`/`produceCachedData` options for `v8.Script`.
Could be used to consume/produce V8's code cache for speeding up
compilation of known code.

PR-URL: https://github.com/nodejs/node/pull/4777


Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>