Add launch naked test

I tried, but I couldn't test this from the Go side. Nevertheless, this
example shows users that they can launch a browser without providing any
options. Also, our CI can detect if the feature works.

Author: inancgumus

examples/launch_naked.js

@@ -0,0 +1,15 @@
+import exec from 'k6/execution';
+import { chromium } from 'k6/x/browser';
+
+export const options = {}
+
+export default function() {
+  try {
+    const browser = chromium.launch();
+    browser.close();
+  } catch (e) {
+    // The test should not fail when launching the browser without
+    // options. Try catch is used to report the error to the shell.
+    exec.test.abort(e);
+  }
+}