The pcraster functions are not accessible

[hboisgon]

HydroMT-Wflow version checks

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Reproducible Example

The pcraster functions in pcrm.py are not imported in init and so are not accessible to users.

import hydromt_wflow.pcrm

Current behaviour

pcrm module and functions not found

Desired behaviour

Availability of the functions

Additional context

No response

[hboisgon]

I see the related notebook is apparently not run properly ? https://deltares.github.io/hydromt_wflow/latest/_examples/convert_staticmaps_to_mapstack.html