chore: add lab to for useEffect hook in frontend cert

[jdwilkin4]

We need a lab to have campers practice working with the useEffect hook.

You can see the lecture videos on the sheet to get a sense of what was taught immediately before this.

We will supply the css for them.

Acceptance criteria

• add your workshop files to the react project folder in the front-end cert directory

[jdwilkin4]

marking this as blocked for now until we know what the final editor implementation will look like for the react and typescript projects.
Oliver will let us know