Feature : Generate Ticket After Successful Payment

Description: Implement automatic ticket generation once a payment is successfully completed via Razorpay. The ticket should include event details, payment info, and a unique ticket ID or QR (to be finalized later).

-> Open to discussion and PRs

Note: Before committing to this issue, fix and merge parent issue #10 (Payment Integration).

Acceptance Criteria:

• Trigger ticket creation only after successful payment verification.
• Store ticket info in database (user, eventId, paymentId).
• Display the generated ticket on the /ticket page.
• Include basic design placeholder for now.

Depends on: ➡️ Issue #10 – Razorpay Payment Integration