console: display timeEnd with suitable time unit

When timeEnd function is called, display result with a suitable
time unit instead of a big amount of milliseconds.

Refs: https://github.com/nodejs/node/issues/29099

PR-URL: https://github.com/nodejs/node/pull/29251


Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>