Parameter set

[rickwierenga]

same as #271 (due to https://discuss.pylabrobot.org/t/fixing-git-lfs-for-plr-required-rewriting-git-history/70)

ParameterSet is nice because we can pass a single parameter to a function that performs a transfer to specify it completely, without having to have two parameters one for asp and one for disp. this ensures eg blow out air volume and transport air volume are the same between the operation. it also provides a way for the user to specify which parameters should go to asp and disp (or both). if we only pass a dict, we would need an additional argument to determine which parameter should go to asp or disp or both

the ParameterSet class is quite empty and ugly and i might refactor aggressively