Boilerplate code for a React + D3 visualization with:

• CDN links for React, ReactDOM, and D3
• Basic React boilerplate
• Variables for dimensions and margins
• useData hook to fetch a CSV URL.
• VizContainer component that:
  • Abstracts SVG/group container elements
  • Follows the margin convention
  • Show the margins, which can be easily removed by deleting the showMargins={true} prop