feat(curriculum): restore seed + solution to Chinese (#40683)

* feat(tools): add seed/solution restore script

* chore(curriculum): remove empty sections' markers

* chore(curriculum): add seed + solution to Chinese

* chore: remove old formatter

* fix: update getChallenges

parse translated challenges separately, without reference to the source

* chore(curriculum): add dashedName to English

* chore(curriculum): add dashedName to Chinese

* refactor: remove unused challenge property 'name'

* fix: relax dashedName requirement

* fix: stray tag

Remove stray `pre` tag from challenge file.

Signed-off-by: nhcarrigan <nhcarrigan@gmail.com>

Co-authored-by: nhcarrigan <nhcarrigan@gmail.com>

curriculum/challenges/chinese/01-responsive-web-design/css-grid/create-your-first-css-grid.md

@@ -4,6 +4,7 @@ title: 创建你的第一个 CSS 网格
 challengeType: 0
 videoUrl: 'https://scrimba.com/p/pByETK/cqwREC4'
 forumTopicId: 301129
+dashedName: create-your-first-css-grid
 ---
 
 # --description--
@@ -24,5 +25,40 @@ class 为 `container` 的 `div` 元素应具有 `display` 属性且属性值应
 assert(code.match(/.container\s*?{[\s\S]*display\s*?:\s*?grid\s*?;[\s\S]*}/gi));
 ```
 
+# --seed--
+
+## --seed-contents--
+
+```html
+<style>
+  .d1{background:LightSkyBlue;}
+  .d2{background:LightSalmon;}
+  .d3{background:PaleTurquoise;}
+  .d4{background:LightPink;}
+  .d5{background:PaleGreen;}
+
+  .container {
+    font-size: 40px;
+    width: 100%;
+    background: LightGray;
+    /* Only change code below this line */
+
+    
+    /* Only change code above this line */
+  }
+</style>
+
+<div class="container">
+  <div class="d1">1</div>
+  <div class="d2">2</div>
+  <div class="d3">3</div>
+  <div class="d4">4</div>
+  <div class="d5">5</div>
+</div>
+```
+
 # --solutions--
 
+```html
+<style>.container {display: grid;}</style>
+```