Add WEB_FEATURES.yml for storage buckets WPTs.
Bug: none
Change-Id: I686907087b2431c2dc8b0dad030825f14d56d494
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5850150
Auto-Submit: Evan Stade estade@chromium.org
Commit-Queue: Ayu Ishii ayui@chromium.org
Reviewed-by: Ayu Ishii ayui@chromium.org
Cr-Commit-Position: refs/heads/main@{#1353416}