Build a core-current-stubs-for-system-modules jar

The classes used to generate core-current-stubs-system-modules
need to be distributed in the SDK so that other build systems
can link their own system modules.

Bug: 143209928
Test: m TARGET_PRODUCT=sdk_phone_x86 TARGET_BUILD_VARIANT=userdebug sdk sdk_repo dist
Change-Id: Id6ebfbfcd26c379b6721ef04fb5d0c437bbe37cf
Merged-In: Id6ebfbfcd26c379b6721ef04fb5d0c437bbe37cf
(cherry picked from commit dc663348278b6c1ba549dea1401f8480b56cc968)
1 file changed