[HIDTREAS-98] Implement evetns integration (backend + frontend)

[jkan172]

Description
We need to implement event functionality across both backend and frontend. On the backend, events should be loaded/called from the payload for the events page. On the frontend, we need to build out the homepage events section to display those events.

Backend - Events page
AS A: system manager,
I WANT: to load and call events from the payload,
SO THAT: events are correctly processed and displayed on the events page.

Frontend - Homepage Events Section
AS A: visitor of the hidden treasure website,
I WANT: to see events on the homepage,
SO THAT: I can quickly learn about and engage with events without navigating deeper into the site.

AC's:

• Backend successfully processes events from the payload.
• Events are stored and available for retrieval on the events page.
• API or endpoint is available to serve events data to the frontend.
• Homepage events section is implemented in the frontend.
• Layout is responsive and matches the site’s design system.