Merge "Add ResultHandlingService to publish training result to client app" into tm-mainline-prod am: d62d9facfb

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/modules/OnDevicePersonalization/+/22726853

Change-Id: If1d2496c711999f6ada51abb2d02109cf9cccc6f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>