Expose `CppHeap` data via
`cppgc::CppHeap::CollectStatistics()` in the v8 module.
PR-URL: https://github.com/nodejs/node/pull/57146
Fixes: https://github.com/nodejs/node/issues/56533
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Stephen Belanger <admin@stephenbelanger.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
