Application Rules

• The application should start by displaying a list of options for the user to choose from and allow the user to input a choice to start using the app.
• It should be possible to add a contact with the following details:
  • Name
  • Phone number
  • Email
  • Favorite (this option is for marking a contact as a favorite)
• It should be possible to view the list of registered contacts.
• It should be possible to edit a contact.
• It should be possible to mark/unmark a contact as a favorite.
• It should be possible to view a list of favorite contacts.
• It should be possible to delete a contact.