Encapsulated `EventsProvider` and `EventThemesProvider` into a new `DataProviders` component to simplify and modularize provider structure. Updated the root provider hierarchy to use `DataProviders`, improving maintainability and readability.
Introduce an EventsContext and EventsProvider to centralize event-related logic, including queries, mutations, and pagination. Wrap the application with the EventsProvider in the providers index to make the context accessible throughout the app.
Introduce a new Providers component to manage global contexts including react-query, theme switching, and authentication. Added necessary dependencies: `@tanstack/react-query-devtools` and `next-themes`, and configured default options for react-query.
