Introduces ReservationSuccess, ReservationFailed, PurchaseSuccess, PurchaseFailed, TicketSmall, and TicketList components for handling and displaying reservation and purchase outcomes. Updates order flow logic in OrderComponent to support reservation and purchase states, disables/enables form inputs during submission, and integrates new UI feedback. Also adds angularx-qrcode dependency and updates @infinimotion/model-frontend version.
Replaces internal array state with Angular signals for selected seats. Updates methods to use signal API and adds a new method to filter selected seats by category.
