feat: add TypeScript lessons and learning panel

- Introduced a new script to check TypeScript lesson files for errors.
- Created a main TypeScript file to render lessons and their details.
- Added lesson definitions with starter and answer codes.
- Implemented a user interface for navigating and running lessons.
- Styled the application with CSS for a better user experience.
- Updated README to reflect the new TypeScript section and usage instructions.

05-es6-plus/02-spread-and-rest/README.md

@@ -0,0 +1,24 @@
+# 练习 2：展开运算符和剩余参数
+
+## 目标
+
+学会复制数组、合并对象，以及用剩余参数接收不定数量的参数。
+
+## 你要练什么
+
+- 数组展开
+- 对象展开
+- 剩余参数
+
+## 任务
+
+- 复制一份课程数组并新增一项
+- 基于用户对象生成一个更新后的对象
+- 写一个 `sumScores` 函数，用剩余参数计算总分
+
+## 文件
+
+- [starter.html](/Users/lijiaqing/home/wwwroot/front-end-example/05-es6-plus/02-spread-and-rest/starter.html)
+- [starter.js](/Users/lijiaqing/home/wwwroot/front-end-example/05-es6-plus/02-spread-and-rest/starter.js)
+- [answer.html](/Users/lijiaqing/home/wwwroot/front-end-example/05-es6-plus/02-spread-and-rest/answer.html)
+- [answer.js](/Users/lijiaqing/home/wwwroot/front-end-example/05-es6-plus/02-spread-and-rest/answer.js)