chore: import upstream snapshot with attribution

tools/challenge-parser/parser/__fixtures__/with-before-hook.md

@@ -0,0 +1,40 @@
+# --description--
+
+Paragraph 1
+
+```html
+code example
+```
+
+# --before-all--
+
+```js
+// before all code
+function foo() {
+  return 'bar';
+}
+foo();
+```
+
+# --hints--
+
+First hint
+
+```js
+// test code
+```
+
+Second hint with <code>code</code>
+
+```js
+// more test code
+```
+
+Third *hint* with <code>code</code> and `inline code`
+
+```js
+// more test code
+if(let x of xs) {
+  console.log(x);
+}
+```