This CL is part of a series that adds the C++ implementation of
SwissNameDictionary, a deterministic property backing store based on
Swiss Tables.

This CL adds the Add, DeleteEntry, Rehash, and Shrink operations, as
well as some helpers required by those.

Bug: v8:11388
Change-Id: I81a181e99e679095c2acc877a293e81b6a581db4
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2715192Reviewed-by: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Marja Hölttä <marja@chromium.org>
Commit-Queue: Frank Emrich <emrich@google.com>
Cr-Commit-Position: refs/heads/master@{#73020}