Add Shared libraries support for Android python libraries

- New shared_libs property to Python code for specify shared libs that should be packed into the library for modules with compiled code.
- Expand shared_lib dependencies when building the python library.
- Change python main entrypoint to extract the zip if there are any shared libraries in the executable to workaround linker limitations

Bug: 395678202
Change-Id: Id94caebf36f7eb1cfa492b2fa78f8c56623e9a43
Test: m py-grpcio