Set enumeration as a subclass of Arrayable

[tristanbr]

Description

Make Enumeration a subclass of Arrayable to allow FMU compilation with enumerations.

The issue can be reproduced from PythonFMU3/examples.

pythonfmu3 build -f Enum.py 
Traceback (most recent call last):
  File "C:\work\extern\PythonFMU3\.venv\Scripts\pythonfmu3-script.py", line 33, in <module>
    sys.exit(load_entry_point('pythonfmu3', 'console_scripts', 'pythonfmu3')())
  File "c:\work\extern\pythonfmu3\pythonfmu3\__main__.py", line 48, in cli_main
    execute(**options)
  File "c:\work\extern\pythonfmu3\pythonfmu3\builder.py", line 133, in build_FMU
    model_identifier, xml = get_model_description(
  File "c:\work\extern\pythonfmu3\pythonfmu3\builder.py", line 58, in get_model_description
    return instance.modelName, instance.to_xml()
  File "c:\work\extern\pythonfmu3\pythonfmu3\fmi3slave.py", line 170, in to_xml
    self.__apply_start_value(v)
  File "c:\work\extern\pythonfmu3\pythonfmu3\fmi3slave.py", line 208, in __apply_start_value
    refs = self.get_int64(vrs)
  File "c:\work\extern\pythonfmu3\pythonfmu3\fmi3slave.py", line 299, in get_int64
    if len(var.dimensions) == 0:
AttributeError: 'Enumeration' object has no attribute 'dimensions'

[StephenSmith25]

Thanks, I missed this one!