Feat: add new Markdown parser (#39800)

and change all the challenges to new `md` format.

curriculum/challenges/english/10-coding-interview-prep/rosetta-code/hash-from-two-arrays.md

@@ -1,65 +1,67 @@
 ---
-title: Hash from two arrays
 id: 595671d4d2cdc305f0d5b36f
+title: Hash from two arrays
 challengeType: 5
 forumTopicId: 302283
 ---
 
-## Description
-<section id='description'>
+# --description--
+
 Using two Arrays of equal length, create a Hash object where the elements from one array (the keys) are linked to the elements of the other (the values).
-<strong>Related task:</strong>
+
+**Related task:**
+
 <ul>
-  <li><a href="https://rosettacode.org/wiki/Associative arrays/Creation" title="Associative arrays/Creation" target="_blank">Associative arrays/Creation</a></li>
+  <li><a href='https://rosettacode.org/wiki/Associative arrays/Creation' title='Associative arrays/Creation' target='_blank'>Associative arrays/Creation</a></li>
 </ul>
-</section>
 
-## Instructions
-<section id='instructions'>
+# --hints--
 
-</section>
-
-## Tests
-<section id='tests'>
-
-```yml
-tests:
-  - text: <code>arrToObj</code> should be a function.
-    testString: assert(typeof arrToObj === 'function');
-  - text: '<code>arrToObj([1, 2, 3, 4, 5], ["a", "b", "c", "d", "e"])</code> should return <code>{ 1: "a", 2: "b", 3: "c", 4: "d", 5: "e" }</code>'
-    testString: assert.deepEqual(arrToObj(...testCases[0]), res[0]);
-  - text: '<code>arrToObj([1, 2, 3, 4, 5], ["a", "b", "c", "d"])</code> should return <code>{ 1: "a", 2: "b", 3: "c", 4: "d", 5: undefined }</code>'
-    testString: assert.deepEqual(arrToObj(...testCases[1]), res[1]);
-  - text: '<code>arrToObj([1, 2, 3], ["a", "b", "c", "d", "e"])</code> should return <code>{ 1: "a", 2: "b", 3: "c" }</code>'
-    testString: assert.deepEqual(arrToObj(...testCases[2]), res[2]);
-  - text: '<code>arrToObj(["a", "b", "c", "d", "e"], [1, 2, 3, 4, 5])</code> should return <code>{ "a": 1, "b": 2, "c": 3 , "d": 4, "e": 5 }</code>'
-    testString: assert.deepEqual(arrToObj(...testCases[3]), res[3]);
-  - text: '<code>arrToObj(["a", "b", "c", "d", "e"], [1, 2, 3, 4])</code> should return <code>{ "a": 1, "b": 2, "c": 3 , "d": 4, "e": undefined }</code>'
-    testString: assert.deepEqual(arrToObj(...testCases[4]), res[4]);
-  - text: '<code>arrToObj(["a", "b", "c"], [1, 2, 3, 4, 5])</code> should return <code>{ "a": 1, "b": 2, "c": 3 }</code>'
-    testString: assert.deepEqual(arrToObj(...testCases[5]), res[5]);
-
-```
-
-</section>
-
-## Challenge Seed
-<section id='challengeSeed'>
-
-<div id='js-seed'>
+`arrToObj` should be a function.
 
 ```js
-function arrToObj (keys, vals) {
-
-  return true;
-}
+assert(typeof arrToObj === 'function');
 ```
 
-</div>
+`arrToObj([1, 2, 3, 4, 5], ["a", "b", "c", "d", "e"])` should return `{ 1: "a", 2: "b", 3: "c", 4: "d", 5: "e" }`
 
+```js
+assert.deepEqual(arrToObj(...testCases[0]), res[0]);
+```
 
-### After Test
-<div id='js-teardown'>
+`arrToObj([1, 2, 3, 4, 5], ["a", "b", "c", "d"])` should return `{ 1: "a", 2: "b", 3: "c", 4: "d", 5: undefined }`
+
+```js
+assert.deepEqual(arrToObj(...testCases[1]), res[1]);
+```
+
+`arrToObj([1, 2, 3], ["a", "b", "c", "d", "e"])` should return `{ 1: "a", 2: "b", 3: "c" }`
+
+```js
+assert.deepEqual(arrToObj(...testCases[2]), res[2]);
+```
+
+`arrToObj(["a", "b", "c", "d", "e"], [1, 2, 3, 4, 5])` should return `{ "a": 1, "b": 2, "c": 3 , "d": 4, "e": 5 }`
+
+```js
+assert.deepEqual(arrToObj(...testCases[3]), res[3]);
+```
+
+`arrToObj(["a", "b", "c", "d", "e"], [1, 2, 3, 4])` should return `{ "a": 1, "b": 2, "c": 3 , "d": 4, "e": undefined }`
+
+```js
+assert.deepEqual(arrToObj(...testCases[4]), res[4]);
+```
+
+`arrToObj(["a", "b", "c"], [1, 2, 3, 4, 5])` should return `{ "a": 1, "b": 2, "c": 3 }`
+
+```js
+assert.deepEqual(arrToObj(...testCases[5]), res[5]);
+```
+
+# --seed--
+
+## --after-user-code--
 
 ```js
 const testCases = [
@@ -81,13 +83,16 @@ const res = [
 ];
 ```
 
-</div>
+## --seed-contents--
 
-</section>
+```js
+function arrToObj (keys, vals) {
 
-## Solution
-<section id='solution'>
+  return true;
+}
+```
 
+# --solutions--
 
 ```js
 function arrToObj (keys, vals) {
@@ -97,5 +102,3 @@ function arrToObj (keys, vals) {
   }, {});
 }
 ```
-
-</section>