Overriding airGR CreateInputsModel, RunOptions and RunModel

Instead of running CreateInputsModel and RunOptions inside the SD RunModel (see: https://gitlab.irstea.fr/in-wop/griwrm/-/blob/3a1003f6ff49e3b36542bdd763c8efe5814e1a05/R/RunModelGriwrm.R#L101). Launch RunOptions once and store all options in a list of sub-basins in order to get a RunModel and Calibration more coherent with the airGR interface.

Use S3 class methods as proposed in HYCAR-Hydro/airgr#14 (comment 20100) for overriding airGR function depending of the class object used as first argument of the function.

added Doing enhancement labels

As InputsModel is an input of CreateRunOptions, we also have to extract CreateInputsModel from the running or calibrating procedure.

However, Upstream flows in InputsModel should be updated during run and/or calibration in order to use the simulated ones.

mentioned in commit 8c715e0f

changed title from Semi-distributive RunOptions to Overriding airGR CreateInputsModel, RunOptions and RunModel

changed the description

closed via commit 0ed4b876