enhance shared folder UI for better file management

Improve the shared folder UI to resemble a file manager and offer user-friendly access to files and folders.

Tasks: Action points to fulfill the above requirement,

• Implement a file manager-style layout - Add icons for files and folders to distinguish between them.
• Get inspiration from existing flask file explorers like this one or others
• Include actions such as file download and delete with corresponding buttons.
• Add breadcrumb navigation for easier folder traversal - Ensure smooth file/folder navigation and error handling in the backend.
• Add features like folder creation, file upload, and sorting files.