Add test API surface java_api_library module for single tree build

Add `java_api_library` module definition for system API surface full
from-text stub `android.jar` generation. java_api_contribution modules
are dynamically created from either bp file defined or java_sdk_library
created droidstubs modules.

Test: m android_test_stubs_current.from-text
Change-Id: I980eb25f413b5ea50483f4cae43ac3786eaecd43
1 file changed