Implement Competition Page - STUDENT

[Julie-Salazar]

Route: /wajo/competition

Competition Flow
User clicks "Competition" in navbar → Redirects to /wajo/competition
If an upcoming competition is available, a "Register" button appears
If competition is live, clicking "Start Competition" redirects to /wajo/competition-live

Description:

Show upcoming competitions and details
Include a "Start Competition" button when applicable (according to starting time of competition)

Implement a countdown timer for competition start time

Display a message if the competition hasn’t started or disable the competition button with modal message that competition hasn't started.