Updated seat-selection component to show the actual number of selected seats and calculate the total price per seat category. Integrated SelectedSeatsService and replaced hardcoded values with computed properties for better accuracy and maintainability.
Introduces SeatSelectionComponent and NoSeatsInHallComponent for improved seat category display and handling cases with no available seats. Updates order flow to show seat categories, loading spinner, and total price. Refactors TheaterOverlayComponent to provide seat categories, and updates styles and dependencies.
