5. implement Pick<T, K>

Pick<T, K>, as the name implies, returns a new type by picking properties in K from T.

Please implement MyPick<T, K> by yourself.

type Foo = {  a: string  b: number  c: boolean}type A = MyPick<Foo, 'a' | 'b'> // {a: string, b: number}type B = MyPick<Foo, 'c'> // {c: boolean}type C = MyPick<Foo, 'd'> // Error