Better OpenAlex support

[ewan-escience]

Better OpenAlex support

Changes proposed in this pull request

• Allow for finding mentions by OpenAlex ID
• Also search in the OpenAlex database when searching for mentions by title
• Expand the mentions scraper to also include mentions with an OpenAlex ID (and no DOI)
• Updated the respective docs

How to test

• docker compose down --volumes && docker compose build --parallel && docker compose up --scale data-generation=0
• Add mentions with a DOI
• Add mentions with an OpenAlex ID but no DOI (see e.g.https://research-software-directory.org/api/v1/mention?external_id=not.is.null&doi=is.null&select=title,doi,external_id&limit=100)
• Add mentions by searching for a title, OpenAlex results should also show up
• Add these mentions in various places (reference papers for software, other mentions for software, project impact, project output)
• Afterwards, run the mentions scraper, no errors should be reported:
• docker compose exec scrapers java -cp /usr/myjava/scrapers.jar nl.esciencecenter.rsd.scraper.doi.MainMentions

Closes #1312

PR Checklist:

• Increase version numbers in docker-compose.yml
• Link to a GitHub issue
• Update documentation
• Tests

[sonarcloud]

Quality Gate failed for 'scrapers'

Failed conditions
14.1% Duplication on New Code (required ≤ 3%)
C Reliability Rating on New Code (required ≥ A)

See analysis details on SonarCloud

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[sonarcloud]

Quality Gate passed for 'rsd-frontend'

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
12.6% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud