Practical guidance on GenAI usage

[c-martinez]

At least for the moment, we should add a chapter with practical guidance on usage of GenAI for research software engineering.

This is complementary to our internal policy, and to training resouces on the topic.

[c-martinez]

Some topics we have discussed should be included:

• License contamination -- which tools can be used?
• How to use declare AI usage? (AI declaration format)

[bouweandela]

Some additional resources:

• https://blog.scientific-python.org/scientific-python/community-considerations-around-ai/
• https://scipy.github.io/devdocs/dev/conduct/ai_policy.html
• https://github.com/pola-rs/polars/blob/main/AI_POLICY.md
• https://docs.xarray.dev/en/latest/contribute/ai-policy.html
• https://rucio.cern.ch/documentation/developer/dev_ai_policy