Merge "Add OWNERS for palette library" am: 2a1600625c am: 43ae72c0f2

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1596851

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I3c3112d0c50c4f26b73db77ac4a6e02553466d61