Day of year for lake model

[verseve]

Day of year (DOY) for the lake module is determined in the wflow Python version as follows: wf_DynamicFramework.py, to deal with leap years and input of 365 days (columns) as part of daily rating curves.

In Wflow.jl we just use a maximum of 365 columns as follows: col = min(doy, 365), and deviate from this approach. Would be good to change this to the wflow Python approach.