Update packages for Address Book react challenge

[kjstauffer]

This PR includes updates to the address-book challenge, specifically for the server and client-react pieces.

I realize this challenge is supposed to be very open-ended so I tried to keep these updates basic. That being said, there may be a couple places where I took too many liberties (e.g. converted class-based components to functional ones). Feel free to reject the PR or request changes.

Note: I also submitted a job application for your Frontend Engineer (React) position.

Changes

Server

• Updated packages to current versions & removed unused packages.
• Replaced faker (corrupt) with @faker-js/faker (community-controlled) - Reason

Client-React

• Updated packages to current versions & removed unused packages.
• Replaced deprecated CreateReactApp build with a bare-bones Vite + React build.
• Removed unused files.
• Updated App.jsx - Replaced class-based components with functional ones.
• Updated App.test.jsx to work with new build tools.