Restructure backend into modular API layers with admin/organizador/invitados routes, add role-based middleware, flatten module models, and update build scripts

packages/legacy/src/guest/api/dto/update-rsvp.dto.ts

@@ -0,0 +1,4 @@
+export class UpdateRsvpDto {
+  rsvp!: boolean;
+  tableId?: string;
+}