[new] archivers/py-zstandard

ports@,

Here the new port archivers/py-zstandard which is part of dependency tree of
security/wapiti which I'm working to update and fix

Unfortently I can't fix tests and make test fails as:

ImportError while importing test module '/usr/ports/pobj/py-zstandard-0.22.0-python3/zstandard-0.22.0/tests/test_open.py'.
Hint: make sure your test modules/packages have valid Python names.
Traceback:
/usr/local/lib/python3.11/importlib/__init__.py:126: in import_module
return _bootstrap._gcd_import(name[level:], package, level)
tests/test_open.py:6: in <module>
import zstandard as zstd
zstandard/__init__.py:39: in <module>
from .backend_c import * # type: ignore
E ModuleNotFoundError: No module named 'zstandard.backend_c'
_______________ ERROR collecting tests/test_train_dictionary.py ________________

I have no idea how to fix it, but I've tested on -current/amd64 by hand and
it works.

Also, to avoid static linking against zstd I disabled CFFI part of that
library, but so-called C-backend works well.

--
wbr, Kirill