Design and implement a console-based restaurant menu management program. Requirements: ( 1) There are exactly three fixed item categories represented by an enum (e.g., APPETIZER, MAIN, DESSERT). ( 2) Support addItem(name, price, category), updatePrice(name, newPrice), removeItem(name), listAll(), and listByCategory(category). ( 3) Print items using each object's toString() rather than accessing fields via getters; list output grouped by category and sorted alphabetically within each category. ( 4) Choose data structures to achieve O( 1) add/update/remove by name and O(k log k) listing within a category (k = number of items in that category). ( 5) Provide a simple CLI that reads commands from stdin and executes them, plus basic unit tests.