[Onboarding] Introduce Gaia to the OC project

[tschaffter]

What product(s) is this feature for?

OpenChallenges

Description

One of the first contributions of Gaia will be to contribute to the development of the OC Data model.

Anything else?

No response

Code of Conduct

• [X] I agree to follow this project's Code of Conduct

[tschaffter]

Here are resources relevant to the OC Data and API models:

• OpenChallenges Data
• OpenChallenges Data Sources
• BIAS and OC Data model comparison
• OpenEBench and OC Data model comparison
• OC Data Model (Lucid)
• OC Data Ingress Event Model (Lucid)

[tschaffter]

I'll create a few stories/tasks for Gaia after discussing with Jake.