Parse citation data as publication?

**Describe the Feature**
The old connector used to [parse citation data into publications](https://github.com/aiondemand/AIOD-rest-api/blob/9d45ff8c72ed975ddac0a1877f8ca1e809e2555f/src/connectors/huggingface/huggingface_dataset_connector.py#L138), it then also uploaded these publications to AI-on-Demand.

This is not present in the current connectors because:

- with the new permission system, assets uploaded by the hugging face connector would be listed as being from the Hugging Face platform and require a valid Hugging Face identifier. But publications aren't on Hugging Face.
- it would require an extra step, because we now use the REST API we cannot register publication and dataset together

I think it makes sense not to introduce the old behavior. However, it would be good to still parse the citation data and see if there is a (likely) match with existing Publications on AI-on-Demand (which in the future hopefully come from e.g., arXiv and other venues).