ZUBA-349: add slide for rag states

[dbarkowsky]

🎯 Summary

ZUBA-349

Changes

Adds a slide with a graphic for the RAG state selection.

🔰 Checklist

• I have read and agree with the following checklist

• I have performed a self-review of my code.
• I have commented my code, particularly in hard-to-understand areas.
• I have made corresponding changes to the documentation where required.
• I have tested my changes to the best of my ability.
• I have consulted with the team if introducing a new dependency.