Create OWNERS file for secretkeeper interface am: 5afbeec13d

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/2864267

Change-Id: I152ab38acdb953a4976141895fc46c91836db04c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>