Allowing more flexible parametrization of the cost estimate functions

[PabloAMC]

In the recent cost estimates functions, there are a number of hardcoded parameters in the system: https://github.com/quantumlib/OpenFermion/blob/cf53c063d0f124a02ff8776bb7f8afb110d4bde6/src/openfermion/resource_estimates/surface_code_compilation/physical_costing.py#L189-L201 Should we add them as parameters to some class that the user can willingly change?