Performance regression testing

[l-kent]

We want some way of logging and comparing the performance (in terms of time, not correctness) for the tests in the test suite, so that performance changes and regressions can be detected.

[ailrst]

Started working on this here #121,

What remains is some scripts to log history and detect regressions. It would make sense to run the tests in a github action either on github or locally using https://github.com/nektos/act