inspector: expose original console

[mcollina]

Adds require('inspector').console, mapping it to the original
global.console of V8. This enables applications to send messages to
the inspector console programmatically.

Fixes: #21651

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