feat: add JavaScript/TypeScript wrapper with Playwright + Puppeteer support

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

js/src/index.ts

@@ -0,0 +1,28 @@
+/**
+ * CloakBrowser — Stealth Chromium for Node.js
+ *
+ * Default export uses Playwright. For Puppeteer, import from 'cloakbrowser/puppeteer'.
+ *
+ * @example
+ * ```ts
+ * // Playwright (default)
+ * import { launch } from 'cloakbrowser';
+ * const browser = await launch();
+ *
+ * // Puppeteer
+ * import { launch } from 'cloakbrowser/puppeteer';
+ * const browser = await launch();
+ * ```
+ */
+
+// Launch functions (Playwright API)
+export { launch, launchContext } from "./playwright.js";
+
+// Binary management
+export { ensureBinary, clearCache, binaryInfo } from "./download.js";
+
+// Config
+export { CHROMIUM_VERSION, getDefaultStealthArgs } from "./config.js";
+
+// Types
+export type { LaunchOptions, LaunchContextOptions, BinaryInfo } from "./types.js";