[EPIC] Implement skeleton front-end

[mmurad2]

Goal: implement lightweight and extendable skeleton FE for MAGUI 2.0 with goal of demoing Form Filling use case

In scope

Out of scope

• Notification logic (tracked as separate ticket)
• Detailed implementation of task card details (pending technical architecture for hero use cases)
• Onboarding UX

Acceptance criteria

• Lightweight implementation
• Use latest popular frameworks (e.g. Tailwind CSS)
• Plug into existing backend