Add an OWNERS file for GeoTZ am: 6721471349

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/modules/GeoTZ/+/13418766

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: Ia8a97c0cd678a569409b517c5a4ef3da80ee7ecb