python-pyelftools: install /usr/bin/pyreadelf

python-pyelftools: install /usr/bin/pyreadelf

The wheel's /usr/bin/readelf.py collides with binutils' /usr/bin/readelf
and gets its shebang stripped by CompileAll + DeleteSourceFiles. Rename
to pyreadelf via the Py3Package install hook, matching Fedora's package.

Also depend on python3-asyncio and python3-codecs: elftools.construct.debug
imports pdb, and Python 3.14's pdb pulls in asyncio (via _pyrepl) and
unicodedata (via _pyrepl.utils) at import time.

Signed-off-by: Alexandru Ardelean <redacted>