Alternative syntax for accessing and changing MizerParams slots

[gustavdelius]

Currently, to change for example the intake_max slot in a MizerParams object called params to a new value called my_intake_max one would do

params <- setMaxIntakeRate(params, intake_max = my_intake_max)

This kind of notation is convenient if one uses the pipe operator, but clunky otherwise. Sometimes it would be nice to simply do

intake_max(params) <- my_intake_max

This is as brief as the old

params@intake_max <- my_intake_max

but would provide the advantage of automatic validation of the new value and of protecting the value from accidental overwriting, as discussed in https://blog.mizer.sizespectrum.org/posts/2021-08-08-change-model-parameters-without-using/

It is also in line with how we change species_params, gear_params and resource_params.

[gustavdelius]

Closed by commit fe92d8c