Minimum python requirement not enforced, but seems to require `python>3.10`

[nickfraser]

Looking at setup.cfg, QONNX doesn't have any minimum python version enforced.

However, in several places syntax is being used which requires python>=3.10. It would be great if you could explicitly enforce this requirement, so that running pip install qonnx will install the latest version that is compatible with my current environment.

You might want to consider a re-release and yanking the v1.0.0 release.