Convert rr files to geometry file

[xldeltares]

convert NWRW files into geometry file with attributes containing necessary rr parameters

Refinement:

• test functions io.read_drr: new function to read nwrw model

• read pluvius.3b -> containing node information
• read pluvius.alg -> containing physical parameters
• read pluvius.dwa -> containing dry weather flow
• read 3brunoff.tp (open water data?) --> containing xy coordinates

• test functions to write subcatchments as geoms
• organize the codes into workflows.io

[xldeltares]

hydrolib-core has not yet implemented NWRW model. Need to implement that function