restore deleted setup.cfg

[lzap]

Looks like setup.cfg is still needed on GHA CI for some reason:

 pip3 install ./changelog
  shell: /usr/bin/bash -e {0}
  env:
    GO_SVR: 1.19.6
Defaulting to user installation because normal site-packages is not writeable
Processing ./changelog
  Installing build dependencies: started
  Installing build dependencies: finished with status 'done'
  Getting requirements to build wheel: started
  Getting requirements to build wheel: finished with status 'done'
  Preparing metadata (pyproject.toml): started
  Preparing metadata (pyproject.toml): finished with status 'done'
Building wheels for collected packages: UNKNOWN
  Building wheel for UNKNOWN (pyproject.toml): started
  Building wheel for UNKNOWN (pyproject.toml): finished with status 'done'
  Created wheel for UNKNOWN: filename=UNKNOWN-0.0.0-py3-none-any.whl size=13170 sha256=628fa45145c4eefcb731f3343005b162467a58a3f225778f267881d03f889ac2
  Stored in directory: /tmp/pip-ephem-wheel-cache-93rqlayk/wheels/d3/ed/73/49464ab3f55b51029de23c1b2baa1adae910909f009b349f32
Successfully built UNKNOWN
Installing collected packages: UNKNOWN
Successfully installed UNKNOWN-0.0.0

No idea what is going on. And why there are two "project" files.