CrossSection locations and ObservationCrossSections written by hydrolib-core contains unknown keyword locationtype

[veenstrajelmer]

Describe the bug
A crossLocFile (crossloc.ini) written by hydrolib-core contains the unknown keyword locationtype. This means the file cannot be read by HYDROLIB-core itself. This behaviour has also been found for ObservationCrossSections and should also be fixed there.

To Reproduce
Minimal code based on issue found in demo_dsd.ipynb. The file raising an error is crsloc.ini

from hydrolib.core.dflowfm import CrossLocModel
crsl_file = "crsloc.ini"
crsl_str = """
[General]
fileVersion = 1.01
fileType    = crossLoc

[CrossSection]
id           = 99
branchId     = 9
chainage     = 403.089709
shift        = 0.0
definitionId = 99
locationtype = 1d

[CrossSection]
id           = 99
branchId     = 9
chainage     = 403.089709
shift        = 0.0
definitionId = 99
locationtype = 1d
"""
with open(crsl_file, 'w') as f:
    f.write(crsl_str)

crossloc = CrossLocModel(crsl_file)

This raises:

ValidationError: 2 validation errors for CrossLocModel
crsloc.ini -> crosssection -> 0 -> __root__
  Unknown keywords are detected in section: 'CrossSection', '['locationtype']' (type=value_error)
crsloc.ini -> crosssection -> 1 -> __root__
  Unknown keywords are detected in section: 'CrossSection', '['locationtype']' (type=value_error)

Expected behavior
Not writing the locationtype property, so resulting in a valid crossloc.ini file that can be read with HYDROLIB-core again. Or maybe it is an allowed property, but in that case hydrolib-core should recognize it.

Version info (please complete the following information):

• OS: Windows
• Version main

Additional info
This did not happen yet in the latest release (0.7.0)