Display enum classes in Pydantic model docs

[mferrera]

Currently enums are filtered from Pydantic docs for pragmatic reasons.

fmu-dataio/docs/ext/pydantic_autosummary/pydantic.py

Lines 28 to 30 in 6263e89

	# Enums aren't Pydantic but found in the same place
	if _is_enum_or_enum_member(annotation):
	return []

It'd be nice to display the enums to show the possible values for fields that receive them.