Add attestations markers on homepage map

[ronerlih]

💬 Description

Get attestations from eas pgraphQL and display as markers. Stretch goal: display avatar profile pictures in marker overlays on Mapbox.

🗞️ Context

Relevant context to this issue-story.

🏗️ TO-DO (tasks or sub-issues)

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✅ Acceptance criteria

📷 Screenshots

📓 Notes