feat: 添加第12课课评、班级总结及学生画像更新

- K4周日1900班第12课《花朵随心画》课评（梁境城、钟嘉逸、王睿意补课）
- AICODE03/CSP03各班级第12课课评及班级总结
- 更新多班级学生画像
- 课评生成技能优化

node_modules/asynckit/lib/defer.js

@@ -0,0 +1,26 @@
+module.exports = defer;
+
+/**
+ * Runs provided function on next iteration of the event loop
+ *
+ * @param {function} fn - function to run
+ */
+function defer(fn)
+{
+  var nextTick = typeof setImmediate == 'function'
+    ? setImmediate
+    : (
+      typeof process == 'object' && typeof process.nextTick == 'function'
+      ? process.nextTick
+      : null
+    );
+
+  if (nextTick)
+  {
+    nextTick(fn);
+  }
+  else
+  {
+    setTimeout(fn, 0);
+  }
+}