Merge "Add METADATA and OWNERS file" into main am: a9e0f541cd

Original change: https://android-review.googlesource.com/c/platform/external/regex-re2/+/3079941

Change-Id: Iee180b0c1c319dcc23a0ec0cab0894fc524ad036
Signed-off-by: Automerger Merge Worker <[email protected]>