Introduce a new API endpoint for ending meetings in the API_URLS file, enhancing the meeting management functionality. This addition complements the existing start meeting endpoint, providing a complete set of meeting control options.
Enhance the appointment detail page for both admin and user interfaces by refining the logic for joining meetings. Update the handling of participant and moderator permissions, ensuring clarity in button displays based on meeting status. Remove the end meeting API endpoint from the API URLs as it is no longer needed.