Add object and array desctructuring examples

[amerikan]

Description

To prepare students for React course:

1. We should cover object destructuring since it's often the technique used when destructing props in React.

function Header({ title, subtitle, color, logo }) { // <-- object destructuring
 return <div>...</div>;
}

2. We should also cover array destructuring so that when they use useState it doesn't feel like magic. With useState that's what we use.

const [bestFriend, setBestFriend] = useState("joe"); // <-- array destructuring

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