feat: integrate Stripe payment processing and add order summary compo…

[dpiyumal2319]

This pull request introduces Stripe payment integration into the order workflow, enabling users to complete payments directly within the app. The changes include new dependencies, environment configuration, and several new components for handling payment, order summary, and post-payment success flow. The most important changes are grouped below:

Payment Integration and Workflow

• Added Stripe payment support by installing @stripe/react-stripe-js and @stripe/stripe-js dependencies in package.json and configuring the publishable key in .env. [1] [2]
• Refactored src/app/(home-app)/orders/[orderId]/page.tsx to implement the Stripe payment flow: initializes payment intent, renders a payment form, handles loading and error states, and displays order summary. (src/app/(home-app)/orders/[orderId]/page.tsxL3-R181)
• Created new CheckoutForm component (src/components/orders/CheckoutForm.tsx) to handle Stripe payment submission, success/error messaging, and redirection after payment.

Order Summary and Post-Payment Experience

• Added OrderSummary component (src/components/orders/OrderSummary.tsx) to show order details, ticket list, price breakdown, and a countdown timer for seat lock expiration.
• Implemented a new payment-success page (src/app/(home-app)/payment-success/page.tsx) to provide confirmation, order details, and auto-redirect after successful payment.

Minor Codebase Cleanups

• Removed unused imports and variables in analytics components for cleaner code in DailySalesChart.tsx and SessionAnalyticsView.tsx. (src/app/manage/organization/[organization_id]/event/[eventId]/analytics/_components/DailySalesChart.tsxL7-R7, src/app/manage/organization/[organization_id]/event/[eventId]/analytics/_components/SessionAnalyticsView.tsxL8-R14, src/app/manage/organization/[organization_id]/event/[eventId]/analytics/_components/SessionAnalyticsView.tsxL33-L34)