Make navigation items work with routes

## Description

This is the same as #294 where we want to enable routes on the website.

As of now, when you click a menu option it will change the page content, but the URL will remain the same https://anitab-org.github.io/

We want to click "EVENTS" and go to https://anitab-org.github.io/events.

- "Events" menu option routes to /events
- "Programs" menu option routes to /programs
- and so on

⚠️ when submitting PR you need to show this working on your gh pages (if possible)

## Mocks

Take a look at #315

## Acceptance Criteria

### Update [Required]

- Navigation routes for each menu item work on GH Pages

## Definition of Done

- [ ] All of the required items are completed.
- [ ] Approval by 1 mentor.