The Appointment component allows users to book an appointment at a barbershop by selecting a service, barber, date, and time slot. The component fetches available services from the server, displays time slots for a specific barber, and validates the inputs before submitting the booking to local storage.

Key Features:

• Select Service Category: The user can select a service category (e.g., Hair, Beard, etc.).
• Select Service Name: After choosing a service category, the user selects a specific service.
• Select Barber: The user can choose a barber (or "No Preference").
• Date Picker: The user selects a date for the appointment.
• Time Slots: Available time slots for the selected date are displayed.
• Validation: The component ensures all fields are filled before submitting the appointment.
• Store Appointment: When the appointment is successfully made, it is saved in the local storage and displayed in the cart.

Import Statements

The component imports several dependencies:

• useContext: To access values from a context provider (e.g., ContextProvider).
• useEffect, useLayoutEffect, useState: React hooks to manage component state and side effects.
• useLocation: To access the location object from the router, useful for retrieving URL parameters.
• react-icons: To display dropdown and date range icons.
• useAxios: Custom hook for API calls.
• ContextProvider: Context to manage and share state across the app.