[Admin] Admin page

[justinyoo]

• To create a new event
• To create a new access code
• To get all events
• To get event by ID
• To get all event access codes

[justinyoo]

• 참고링크:
  • Fluent UI for Blazor: https://www.fluentui-blazor.net/
  • Blazor Event Handling: https://learn.microsoft.com/aspnet/core/blazor/components/event-handling

[justinyoo]

• Features
  • [Playground/Admin] Add Fluent UI library #250
  • [Admin] Navigation sidebar #238
  • [Admin] Landing page #184
  • [Admin] Component: List of events #185
  • [Admin] Component: New event #186
  • [Admin] Component: View event details #187
  • [Admin] Resources #302