[Feature]: Function to write a ColumnCorpus instance to files

[chelseagzr]

Problem statement

It would be nice if there is a function to write a ColumnCorpus instance to files.

Related issues:
#988
#2591

Solution

Add a method write_to_directory to the ColumnCorpus class:

class ColumnCorpus(MultiFileColumnCorpus):

    def write_to_directory(self, label_types: list[str], output_directory: Path):
        """With a list of label_types specified, write the train, dev, test datasets of this corpus to files in CoNLL format."""

Additional Context

Is there any reason the ColumnCorpus class should not have a function like this?
If not, I can draft a PR for this feature.

[helpmefindaname]

Hi @chelseagzr

I don't see a reason to not have this. PR's are welcome, thank you for volunteering :)