Integrate Backend API with Schedule Page

[afrinbhuiyan]

The Schedule page currently displays static or placeholder data. We need to integrate it with the backend API to fetch and display real schedule data dynamically.

Tasks:

Connect Schedule page to the backend API endpoint.

Fetch schedule data (classes, timings, instructors, etc.).

Display the fetched data in the existing UI components.

Handle loading and error states gracefully.

Ensure data updates correctly when changes occur.