feat: add makeWASocketAutoVersion for automatic version fetching

Adds a new async function that automatically fetches the latest
WhatsApp Web version from web.whatsapp.com before connecting.

Usage:
```typescript
// Option 1: Auto-fetch version (recommended)
const sock = await makeWASocketAutoVersion({ auth: state })

// Option 2: Manual version (existing behavior)
const sock = makeWASocket({ auth: state })
```

Benefits:
- No need to update library for version changes
- Automatic fallback to bundled version if fetch fails
- Logged warnings when using fallback

src/Types/Socket.ts

@@ -49,6 +49,13 @@ export type SocketConfig = {
 	logger: ILogger
 	/** version to connect with */
 	version: WAVersion
+	/**
+	 * Automatically fetch the latest WhatsApp Web version on connect.
+	 * When enabled, fetches from web.whatsapp.com before connecting.
+	 * Falls back to bundled version if fetch fails.
+	 * @default false
+	 */
+	fetchLatestVersion: boolean
 	/** override browser config */
 	browser: WABrowserDescription
 	/** agent used for fetch requests -- uploading/downloading media */