Add test API surface java_api_library module for single tree build am: fffc1eaadb

Original change: https://android-review.googlesource.com/c/platform/build/orchestrator/+/2402854

Change-Id: I3fb3c22261005a56ed7fa9d8aa354fc1cacd7a03
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>