Setup performance profiling in CI

[JCGoran]

It would be useful to setup performance profiling and reporting in the CI (for instance, once a month, or on each new commit to master) to monitor whether or not any performance regressions were introduced in NEURON.

[alexsavulescu]

This must be done with self hosted runners, the ones on GH are not ideal for these kind of checks (shared runners, unpredictable entropy).