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/06-async-await/answer.js

@@ -0,0 +1,27 @@
+function loadConfig() {
+  return new Promise((resolve) => {
+    setTimeout(() => {
+      resolve({
+        title: "现代 JS 面板",
+        level: "进阶",
+      });
+    }, 800);
+  });
+}
+
+const status = document.getElementById("status");
+const output = document.getElementById("output");
+
+async function renderConfig() {
+  status.textContent = "加载中...";
+
+  try {
+    const config = await loadConfig();
+    status.textContent = "加载完成";
+    output.textContent = `${config.title} - ${config.level}`;
+  } catch (error) {
+    status.textContent = "加载失败";
+  }
+}
+
+renderConfig();