Build a Color Picker App

**Objective:** Fulfill the user stories below and get all the tests to pass to complete the lab. **User Stories:** 1. You should define and export a `ColorPicker` component. 1. You should use the `useState` hook. 1. You should have a `#color-picker-container` element with a white background. 1. You should have a `#color-input` element which should be a `color` input. 1. Your `#color-input` should be a child of `#color-picker-container`. 1. When `#color-input` is changed, `#color-picker-container` should have its background set to that new value.