Implement Appointment scheduling calendar

• Implement the calendar view for the appointments listed on the appointment page
• Use the existing Date filter component to call the function which can be used to query the appointments for each time range form the backend
• Use the week View for the initial implementation

Documentation for the library is posted below

https://devexpress.github.io/devextreme-reactive/react/scheduler/demos/featured/overview/

@JohnTheBeloved