[EPIC] Docs #1317

Docs aren't fun, so I'm creating an epic to track all docs tasks in one place.

Some of these items came from the TODO list on #1297. I'd spent too long on #1297, so I wanted to merge it as-is and tackle these items in the future.

• Refer to CommonJS / ESM consistently across all docs; link to common page explaining the difference

  • CommonJS
  • Native ECMAScript modules
  • ESM
  • native ESM

• Refer to ts-node consistently; naming is inconsistent throughout the readme (implemented in changed all references to ts-node consistent #1481)

  • TypeScript Node
  • TS Node
  • ts-node
  • ts-node (in backticks)

• remove "under construction" banner

• Additions to "Troubleshooting" page

  • Add common ESM errors to Troubleshooting page #1607
  • Common troubleshooting tricks?

• Revisit "shebang" (implemented by Docs overhaul #1682)

  • move to "advanced?"
  • deduplicate with "usage"
  • explain shebang gotchas
  • consider keeping as discussion thread?

• add "API" page to "Advanced" section (implemented by Docs overhaul #1682)

  • list cool things you can do with the API
    • create a custom REPL
    • simpler TS compiler wrapper
    • detect if ts-node is already installed via process.

• Update "Ignored files" > "File extensions" to include mjs, mts, cts, cjs #1899

• Add CONTRIBUTING.md docs about VSCode debugging #1499

• Categorize API docs #1456

• ignore option docs unclear; should point out they're regexps #1089

• Fix createEsmHooks docs so they're not so ugly. Export proper type aliases for node's ESM loader hooks #1506

• Tweak options docs to give each a header; draw inspiration from typedoc #1606

• Add shiki-twoslash tooltips to docsite #1670

• Prettier, categorized --help output #1674

• Add json schema-powered shiki twoslash tooltips to docsite #1675