Store cropland share and cropland water requirements

[camiloramirezgo]

Store the information relate to cropland shares withing each administrative boundary from WEAP and the related water requirements of each. This will be helpful for the visualisation platform.

The information can be stored in the main dataframe, or create properties for the model that contain it e.g. in the form of a Python dictionary as:

model.cropland_share = {'Province1': {'Crop1': 0.2, 'Crop2': 0.3, 'Crop3': 0.5},
                        'Province2': {'Crop1': 0.4, 'Crop2': 0.5, 'Crop3': 0.1}

Although, it would be interesting to have it at the main dataframe to be able to able to display easily monthly information. However, to store everything in the main dataframe may have consequences in performance when filtering the data for the visualisation.