OpenAlex data collection pipeline

[beingkk]

Collection of OpenAlex works using our keyword taxonomy. We can build on the simple function in discovery_utils.getters.openalex, to check every week for new works with the specific keywords and add them to our S3.

Consider also using OpenAlex's concepts or - if concepts are deprecated - then their new topics.

Needs some careful testing of how to best formulate OpenAlex search, as sometimes the query results can be off topic (when using the simplest search option, as presently implemented in discovery_utils.getters.openalex).

Re keyword search, see also it's useful to reuse keyword search code from here - but note that it might be deprecated, as we should use pyalex package going forward.