feat: implement public booking cancellation feature

- Added cancelPublicBooking handler to manage booking cancellations.
- Updated public booking service to include cancellation logic.
- Created cancelPublicBooking schema for input validation.
- Modified public booking confirmation page to allow users to cancel their bookings.
- Enhanced email service to send cancellation confirmation emails.
- Made customerEmail field required in booking schemas and updated related components.
- Updated API client to support cancellation requests.
- Added migration to enforce non-nullable customer_email fields in the database.

apps/backend/src/services/booking-email.service.ts

@@ -7,6 +7,7 @@ import { sendMail } from '@/lib/mailer';
 
 type BookingEmailInput = {
   bookingCode: string;
+  complexSlug?: string;
   complexName: string;
   date: string;
   startTime: string;
@@ -14,7 +15,7 @@ type BookingEmailInput = {
   courtName: string;
   sportName: string;
   customerName: string;
-  customerEmail?: string;
+  customerEmail: string;
   price?: number;
 };
 
@@ -23,6 +24,7 @@ export async function sendBookingConfirmation(data: BookingEmailInput) {
 
   const html = bookingConfirmationHtml({
     bookingCode: data.bookingCode,
+    complexSlug: data.complexSlug,
     complexName: data.complexName,
     date: data.date,
     startTime: data.startTime,