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/frontend/src/lib/api/resources/bookings.ts

@@ -1,5 +1,6 @@
 import type {
   AdminBooking,
+  CancelPublicBookingInput,
   CreateAdminBookingInput,
   CreatePublicBookingInput,
   PublicAvailabilityResponse,
@@ -51,6 +52,14 @@ export async function createAdmin(complexId: string, payload: CreateAdminBooking
   return response.data;
 }
 
+export async function cancelPublic(complexSlug: string, payload: CancelPublicBookingInput) {
+  const response = await http.post<PublicBooking>(
+    `/api/public-bookings/complex/${complexSlug}/cancel`,
+    payload
+  );
+  return response.data;
+}
+
 export async function updateStatus(bookingId: string, payload: UpdateAdminBookingStatusInput) {
   const response = await http.patch<AdminBooking>(
     `/api/admin-bookings/${bookingId}/status`,