add unit conversions to netcdf_parser

[enssow]

Describe the task. It can be a feature, documentation, etc.

netcdf_parser currently relies on all the WeatherGenerator units being consistent, however different streams save the data with different unit conversions

the config_zarr2cf should be amended to reflect the unit conversions available in config_zarr2verif

Hedgedoc URL, if you are keeping notes, plots, logs in hedgedoc.

No response

Area

• datasets, data readers, data preparation and transfer
• model
• science
• infrastructure and engineering
• evaluation, export and visualization
• documentation
• performance