fix: correct package_data paths for native library files (closes #228)

[botbikamordehai2-sketch]

What

The get_shared_library_data_to_include() function in setup.py returns relative paths (e.g., lib/x86_64/libop_uniffi_core.so) that are not resolved correctly by setuptools' package_data when package_dir is set to {'': 'src'}. This causes the native library and bindings to be missing from the installed package, leading to import errors (e.g., ModuleNotFoundError: No module named 'onepassword.lib').

Fix

Prefix the returned file paths with the package name onepassword/ so that setuptools correctly locates the files under src/onepassword/lib/... and includes them in the wheel.

Closes #228

[github-actions]

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