feat: add customer email functionality for booking confirmations

- Implemented email confirmation for admin and public bookings.
- Added customerEmail field to booking schemas and services.
- Created email templates for booking confirmation, cancellation, and no-show notifications.
- Updated booking handlers to send emails upon booking creation and status updates.
- Enhanced frontend forms to capture customer email during booking creation.

apps/backend/src/modules/admin-booking/handlers/create-admin-booking.handler.ts

@@ -2,6 +2,7 @@ import {
   AdminBookingServiceError,
   createAdminBooking,
 } from '@/modules/admin-booking/services/admin-booking.service';
+import { sendBookingConfirmation } from '@/services/booking-email.service';
 import type { AppContext } from '@/types/hono';
 import type { CreateAdminBookingInput } from '@repo/api-contract';
 
@@ -14,6 +15,20 @@ export async function createAdminBookingHandler(c: AppContext) {
 
   try {
     const booking = await createAdminBooking(user.id, complexId, payload);
+
+    void sendBookingConfirmation({
+      bookingCode: booking.bookingCode,
+      complexName: booking.complexName,
+      date: booking.date,
+      startTime: booking.startTime,
+      endTime: booking.endTime,
+      courtName: booking.courtName,
+      sportName: booking.sport.name,
+      customerName: booking.customerName,
+      customerEmail: booking.customerEmail,
+      price: booking.price,
+    });
+
     return c.json(booking, 201);
   } catch (error) {
     if (error instanceof AdminBookingServiceError) {