Hi there, I am in the process of developing a web app using PHP, and I prefer not to use any packages or libraries. The main functionality of this app will be allowing users to create, edit, and delete calendar events. However, I am currently facing difficulties in determining the best approach to achieve this. I have been unable to find any clear resources or tutorials on how to proceed with implementing the calendar API. My question is, do I need to enroll in the Apple Developer Program to accomplish this? How can i pass authentication and make CRUD operation? I am seeking assistance from someone who can provide detailed guidance on where to start and how to proceed with implementing the calendar functionality. Thank you