Upgrade Frontend to React 18

[hanlinc27]

A maintenance ticket to update starter-code to the latest release of React 18.

Resource Links:

• https://reactjs.org/blog/2022/03/08/react-18-upgrade-guide.html
• Installing React 18 RC reactwg/react-18#9
• https://beta.reactjs.org/
• RFC: Suspense in React 18 reactjs/rfcs#213

Concurrent Examples:

• https://reactjs.org/docs/react-api.html#reactsuspense
• https://reactjs.org/docs/hooks-reference.html#usetransition