[feature] Chose crop model in the config file instead of main script

Summary

The choice of the crop model should be treated as any input : handled in the parameter file (scenario).

Current behavior

The choice of the crop model is in the main script, which is not consistent with the rest of the inputs of PASE.

Desired behavior

The choice of the crop model should be treated as any input : handled in the parameter file (scenario). It should be a field in a scenario YAML file, as a string input that must match the currently supported crop models : [STICS, SIMPLE, GrassSim].

Sources

n/a

Linked features or branches

n/a