Fill areas page

**Is your feature request related to a problem? Please describe.**
The current areas page is a template work-in-progress page:

> This page is a work in progress
Join CS Club to contribute to this page!

**Describe the solution you'd like**
The page should be filled with the specific areas about CS Club
- Girls Who Code
- Algorithmic Programming
- Game Design
- Cybersecurity

The officers can be @'d on Discord if information is needed.

Start by locating the areas page in the repository's plain HTML site and review how other pages structure their content and styles. Add sections for Girls Who Code, Algorithmic Programming, Game Design, and Cybersecurity, using information confirmed with the officers. Done means the template text is replaced with useful information for all four areas and the page renders consistently with the site.

Scritto dal modello di indicizzazione a partire dal testo della issue.