Implement a generic MyReadonly2<T, K> which takes two type argument T and K. K specify the set of properties of T that should set to Readonly. When K is not provided, it should make all properties readonly just like the normal Readonly<T>. For
题目 中文 实现一个通用MyReadonly2<T, K>，它带有两种类型的参数T和K。 K指定应设置为Readonly的T的属性集。如果未提供K，则应使所有属性都变为只读，就像普通的Readonly<T>一样。 例如 interface Todo { title: string description: string completed: boolean } const todo:
