Add team members as owners

Change-Id: I711d2b8e67ad80731b805353520988f796d6a95d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2358678Reviewed-by: Yang Guo <yangguo@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Almothana Athamneh <almuthanna@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69445}

INFRA_OWNERS

 machenbach@chromium.org
 tmrts@chromium.org
+almuthanna@chromium.org
+liviurau@chromium.org