feat: add agent page tabs

[ferruhcihan]

📌 Summary

This PR updates the agent page with tabs.

Ticket: https://track.akamai.com/jira/browse/APL-1199
Figma: https://www.figma.com/design/12oYPXhQvdQhsQiFZJzWGW/RFC-APL-1118-PoC?node-id=54-208&t=ZTGVrZz2N0zlTWSe-0
Related PRs: apl-core || apl-api

Considerations

• I have tested the changes in both light and dark mode.
• I have considered the need for new unit tests.
• I have tested the changes on a cluster.
• I have included relevant documentation updates.
• I have an approved Figma design or have reflected my changes in Figma
• I have verified that the UI/UX is consistent in major browsers (e.g., Chrome, Firefox, Safari, Edge).
• I have tested the changes for responsiveness in different screen resolutions.
• I have tested expected error states and verified that the user is presented with informative error messages.
• I have tested the feature with unusual or extreme inputs (e.g., very long strings, empty states, clicking a button multiple times quickly).

[ElderMatt]

How does the user know that something needs to be filled in on page playground?

[dennisvankekem]

LGTM, nice touch to add the descriptions