Convert CreateEventBtn to Typescript

src/contexts/Events/EventContext.ts

@@ -17,6 +17,7 @@ export type EventGroup = {
 export type EventContextType = {
   events: EventGroup[];
   updateEvent: () => void;
+  addEvent: (name: string, description: string, start: string, end: string) => Promise<void>;
 };
 
 export const EventContext = createContext<EventContextType | null>(null);