src: expose V8's IsNativeError() in util bindings

[cjihrig]

Exposes IsNativeError() through process.binding('util'). The tests are copied from util.isError(). The results are the same with the exception of the last one (object inheriting from Error).

R= @addaleax because of #12400 (comment)

Checklist

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

Affected core subsystem(s)

src