build a simple ToDo List or TaskList javascript, html$,$ css application.

A ToDo List is an application that creates track of a user's list of things to do$.$ It lists everything that you have to do$.$ By keeping such a list, you make sure that your tasks are written down all in one place so you don't forget anything important. An example of a ToDo list application is Trello.

Your ToDo List application will have the following features

$1.$ Allow a user to access the application by providing their username. For a new user, you will allow the user to specify the username. User information can be maintained as an object within the array in your JavaScript.

$2.$ If the user is an existing user, you will show the list of all the tasks that they have created.

$3.$ The user should be able to create a new task. Each task must include a Task Name, Priority $($Low$,$ Medium, High$)$ and Due Date.

$4.$User should be able to select an existing task from the list and delete it$.$

$5.(20$ points$)$ User should be able to select an existing task from the list and update it$.$

$6.$ Preserve user state. Store user state in cookies or in a local json file and retrieve the user information even when the browser is closed and re$-$opened.