chore: add Learn Pseudo-classes workshops to frontend cert

[jdwilkin4]

In this new frontend cert, we have module to go into more detail about pseudo classes and how the different ones work. The preceding lecture block will teach them about the different types of pseudo classes.

The cafe menu does introduced pseudo classes briefly here https://www.freecodecamp.org/learn/2022/responsive-web-design/learn-basic-css-by-building-a-cafe-menu/step-91

But we will need a small workshop for campers to apply what they learned about pseudo classes in a step based tutorial.

Acceptance criteria

• [ ] create a new folder of the project in the frontend-cert/css-projects directory
• [ ] add your completed project(index.html and styles.css files) in that new folder