[FR] Extend Docusaurus syntax highlighting to code samples

[sserrata]

Is your feature request related to a problem?

Today, syntax highlighting for API code samples is distinct from the syntax highlighting applied by Docusaurus.

Describe the solution you'd like

Ideally, the syntax highlighting configured in docusaurus.config.js would automatically be applied to the code samples (and possibly the live request payload/param editor).

Describe alternatives you've considered

Attempting to use CSS variables to match the style, which doesn't always work well.

Additional context

One possible solution might be to adapt the Curl theme component to use the built-in Docusaurus CodeBlock component. I am not sure how we'd match styles with Monaco/VSCode editor, but it's possible we could pass the Docusaurus styles with prism-react-renderer.