console: add color support

[addaleax]

• util: introduce formatWithOptions()

  Identical to format() except that it takes an options argument
  that is passed through to inspect().

• doc: document Console(…, ignoreErrors) option

• console: add color support

  Add a way to tell Console instances to either always use, never use
  or auto-detect color support and inspect objects accordingly.

• console: auto-detect color support by default

  This makes Node pretty-print objects with color by default
  when console.log()-ing them.

The last commit could be split out into a separate PR if that’s preferred.

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