No README-PYPI.md when installing in editable mode

[cesekova]

If I run pip install -e . I will get an error:

....
      FileNotFoundError: Readme path `/ws/acuvity/acuvity-python/README-PYPI.md` does not exist.
      [end of output]

  note: This error originates from a subprocess, and is likely not a problem with pip.
error: metadata-generation-failed

× Encountered error while generating package metadata.
╰─> See above for output.

note: This is an issue with the package mentioned above, not pip.
hint: See above for details.

• README-PYPI.md is created in spekeasy scripts and sanity workflow but if someone wants to install in editable node it needs to be created manually