[Docs] Illustrate cloud/identity/teams with Infrastructure and Development team examples

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Overview

Update cloud/identity/teams to use Orbital Labs' Infrastructure team (Zara, Five) and Development team (Rex, Jordan) as examples.

Tasks

• Add the Infrastructure team (admin: Zara Osei, members: Five) as primary example
• Add the Development team (admin: Maya Chen, members: Rex Park, Jordan Reyes) as second example
• Add /images/five/team-of-fives.svg illustration at an appropriate point
• Link to /cloud/about for full cast reference

Reference

• Narrative: /cloud/about
• Difficulty: Low