Spec: https://tc39.es/proposal-intl-locale-info/
Design Doc: https://docs.google.com/document/d/1OwEsvs8VQwvR-ug01xLyIwpgcvUfaP24u9owc7aBKJ4/edit#
https://www.chromestatus.com/feature/5566859262820352

Behind flag --harmony_intl_locale_info

Bug: v8:11638

Change-Id: Ie616b3394d047c99d95ae46f112b5f0b367afe74
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2570218
Commit-Queue: Frank Tang <ftang@chromium.org>
Reviewed-by: Shu-yu Guo <syg@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74394}