[Feature request]: support computed / derived parameters within configuration files

[pearsonca]

Label

config, gempyor

Priority Label

low priority

Is your feature request related to a problem? Please describe.

flepimop configurations currently supports calculations in transmission rates, and a variety of parameter specifications.

however, a "computed" parameter type is not currently supported

Is your feature request related to a new application, scenario round, pathogen? Please describe.

No response

Describe the solution you'd like

add a "computed" parameter type, which would move the operator / function transforms application into a parameter. that would simplify transmission calculation (because they would then be specified in terms of this new computed parameter only) as well as post-processing (because can plot just, say, computed parameters).