Create reference dumps from .so.apex.lsdump

APEX ABI dumps are separated from the implementation libraries' ABI
dumps. The file names end with .so.apex.lsdump.

Test: ./create_reference_dumps.py
Bug: 333532038
Change-Id: I0f95c62526e0e41632b58acb04e6e31cccbf4781
2 files changed