Add a new Remotion package

Steps

1. Create packages/<name>/ with these files:

   • package.json — copy from @remotion/light-leaks as template; update name, description, homepage, dependencies
   • tsconfig.json — extends ../tsconfig.settings.json, uses tsgo with emitDeclarationOnly: true, outDir: "dist", module: "es2020", moduleResolution: "bundler", target: "ES2022"
   • src/index.ts — exports
   • bundle.ts — Bun build script, externalize react, remotion, remotion/no-react, react/jsx-runtime, react/jsx-dev-runtime, react-dom
   • eslint.config.mjs — use remotionFlatConfig({react: true}) if React, {react: false} otherwise
   • .npmignore — copy from @remotion/light-leaks
   • README.md — package name, description, install command, link to docs

2. Register in monorepo:

   • tsconfig.json (root) — add {"path": "./packages/<name>"} to references
   • packages/cli/src/list-of-remotion-packages.ts — add '@remotion/<name>'
   • packages/create-video/src/list-of-remotion-packages.ts — add '@remotion/<name>'
   • packages/studio-shared/src/package-info.ts — add to packages, descriptions, installableMap, apiDocs