[Admin] Component: Update event details - update event details

[justinyoo]

AS an admin
I WANT to modify a given event details
SO THAT I can update the event details

[justinyoo]

• [OpenAPI] Add endpoint for update event details #202
• [Backend API] Implement endpoint for update event details #203
• [Admin] Component: Update event details - UI component (update) #204
• [Admin] Component: Update event details - UI logic (update) #205