Add Delete Functionality for ToDoItems and CSS

[kevnlliu]

Remember, create a new branch before coding!

Main task: Fill out the deleteToDoItem function in ToDoList.jsx so that there are delete buttons next to each to ToDoItem that allow you to delete said corresponding ToDoItem. Note: you will not be able to call toDoItems.pop(index) directly, you will still have to call setToDoItems on a new array with the corresponding item no longer there (i'm sure there are also answers for this online if you look on stack overflow).

Secondary task (optional): Add CSS to the project using .module.css files, importing those files as "import styles from <path to css file" and setting tags that you want to stylize to className = styles[]. There is an example provided in ToDoList.jsx.