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/04-modules-basic/starter.js

@@ -0,0 +1,3 @@
+// 任务：
+// 1. 从 ./course-data.js 导入 courses 和 formatCourse
+// 2. 把格式化后的结果写入 #output