Adds js/ package mirroring the Python wrapper architecture:
- Dual API: import from 'cloakbrowser' (Playwright) or 'cloakbrowser/puppeteer'
- TypeScript with full type definitions
- Same binary download/cache logic, same stealth args, same env vars
- Optional peer deps: users install only the runtime they need
- Full 6-site stealth test suite (sannysoft, incolumitas, BrowserScan, deviceandbrowserinfo, FingerprintJS, reCAPTCHA v3)
- Published to npm as cloakbrowser@0.1.2
