Feature/refactoring event lists

[benoitmignault]

This pull request refactors how event details and results are fetched and displayed in the golf league application. It separates the retrieval of event lists from event results, introduces a new API endpoint for event details, and updates the frontend to fetch and display results on demand. Additionally, it standardizes CORS and JSON headers across API endpoints and improves user interaction logging.

API changes:

• Added new endpoint event-details.php to fetch detailed results for a specific event, returning player results for that event only.
• Refactored eventslist.php to return only the list of events (without results), simplifying the data structure and query.
• Standardized CORS and JSON headers in all API files (eventslist.php, standings.php, player-details.php) for consistent cross-origin support and response format. [1] [2] [3]

Frontend changes:

• Updated EventsList.jsx to fetch the event list without results, and to fetch event results from the new API only when an event is clicked. Results are displayed in a table below the event. [1] [2] [3] [4]
• Added logging of event detail clicks to the backend via a dedicated API call, similar to how player detail clicks are logged.
• Fixed state reset for event and player results when closing their respective detail views, preventing stale data display. [1] [2] [3]

These changes improve the frontend performance, data accuracy, and maintainability by separating concerns and reducing unnecessary data transfer.