create a way to run calculations with different parameters

[razumau]

It would be nice to able to run calculations with different values of some parameters, collect results, and compare them in some way (ideally, run a gradient in a landscape of multiple parameters). The first step is probably automating multiple runs with values from a list.

Most constants are defined in scripts/constants.py.

One immediate parameter (which is actually six parameters) that could be improved is TECHNICAL_RATING_DISTRIBUTION.