Implement UX design for enhanced File field

[oidacra]

Parent Issue

#29691

Task

Implement the UX design for the enhanced File field as specified in the design system. This includes the main field area for drag and drop, and the right-side links for additional options.

Proposed Objective

User Experience

Proposed Priority

Same as Parent Issue

Acceptance Criteria

1. The File field UI matches the design provided in the design system
2. The main field area displays "Drag and Drop or Choose file to upload"
3. Right-side links are implemented: "Select Existing File", "Import from URL", and "Create New File"
4. The layout is responsive and works well on different screen sizes

Assumptions & Initiation Needs

• Access to the design system and detailed UI specifications
• Frontend development environment set up and ready