[Frontend] — ENHANCEMENT: Add My Creator Events Page at `/creator-events/my-events`

[Olowodarey]

Personal dashboard showing all creator events the user has joined or created, with their predictions and scores.

Required Features

1. Tabs:

   • Joined Events — events user has joined as participant
   • Created Events — events user has created
   • Completed Events — finished events with final results

2. Joined Events View:

   • Event card with:
     • Event title
     • Creator address
     • Your score (correct / total matches)
     • Matches remaining
     • "View Event" button
     • "Make Predictions" button (if unpredicted matches exist)

3. Created Events View:

   • Event card with:
     • Event title
     • Participants count
     • Matches count
     • Status
     • "Manage Event" button
     • "Add Matches" button
     • "View Results" button (if completed)

4. Completed Events View:

   • Event card with:
     • Event title
     • Final score
     • Winner badge (if user won)
     • Rank
     • "View Details" button

5. Stats Overview:

   • Total events joined
   • Total events created
   • Total predictions made
   • Win rate (perfect scores / completed events)

6. Empty States for each tab

Files to create:

• frontend/src/app/(authenticated)/creator-events/my-events/page.tsx
• frontend/src/component/creator-events/MyEventCard.tsx