This reimplements the {base::make_array} helper using
{std::index_sequence}. This avoids the need to recursively create index
lists in template argument packs, and replaces a partially specialized
struct by a single function.

R=tebbi@chromium.org

Bug: v8:9396
Change-Id: I60369bfac6cb9abc889ed658208411949ca9ec07
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1800575
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63752}