[13] Add functionality to retrieve OpenAlex works from concept Ids

[Jack-0-0]

Closes #13.

This pull request adds:

• Kedro pipeline data_collection_oa with functionality to retrieve OpenAlex works from concept ids and years from the OpenAlex API and then saves the data to S3. The data_collection_oa dir contains nodes.py and pipeline.py files.
• OpenAlex works dataset oa_raw_works_for_concepts_and_years to the kedro data catalog (conf/base/catalog.yml).
• test_concept_ids and test_publication_years parameters to the conf/base/parameters_data_collection_oa.yml file which are used in the pipeline. We can update this file with the real values when we have agreed on the full list of concepts and years that we need.
• data_collection_oa README explaining how to use this Kedro pipeline
• A note to the main README file regarding how to store AWS S3 credentials (there are issues saving/loading data if the credentials are in the format in the kedro docs)
• Updates data catalog items to use the format: f"{source}_{stage}_{description}"

[Jack-0-0]

Good stuff! A few comments, some on style, some on kedro functionalities.

Thank you for the review. I've made all the requested changes now 🙂

Thanks for your help in fixing the issue I had with S3 credentials. I've added a related note to the main README of the repo.

[Jack-0-0]

@ampudia19 I have resolved conflicts between this PR and main (after #16 was merged into it).

I've updated the data catalog to use the format f"{source}_{stage}_{description}".