[Workshop] Web Inspector for JS

# Workshop Request

Context: https://github.com/CodeYourFuture/curriculum/pull/330/files/f7182e63ee46801b3853cc12b9863bd14e3e8a0c#diff-0fe9daf0f2cb318614cdd80d90a20be5485beb3ba937743ce26e8d598bd409ac

## What is the title of your workshop

Web Inspector for JS

## What are the key topics that will be covered in the workshop?

* Using the javascript console in the web inspector (both to see logs, and to execute code)
* That the element tree shows the current DOM state of elements, not the initial HTML state

## What knowledge does the trainee need before starting?

* Must have written some JavaScript (literally any JavaScript)
* Must have used `console.log`
* Ideally an introduction to the DOM