Add system server API surface java_api_library module for single tree build am: 113d9f62a6

Original change: https://android-review.googlesource.com/c/platform/build/orchestrator/+/2402856

Change-Id: I838d92374eed06c9585a26328358092ad87fef32
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>