v8: expose new V8 5.5 serialization API

Expose the new serialization API that was added in V8 5.5 to userland. The JS API is virtually a direct copy of what V8 provides on the C++ level.

This is useful Node as a possible replacement for some internals that currently use JSON, like IPC, but is likely to be useful to general userland code as well.

Checklist

• make -j4 test (UNIX), or vcbuild test (Windows) passes
• tests and/or benchmarks are included
• documentation is changed or added
• commit message follows commit guidelines

Affected core subsystem(s)

V8

/cc @nodejs/v8