login clientside validation and request

[kwlskiy]

• add clientside/javascript validation to the "login.html", feel free to implement it yourself if not already there see corresponding issue #9 , set the password requirements yourself, document them accordingly in the readme
• add a fetch request to the server that sends our validated data from the form to the server

[chawlapalak]

Hi I would like to work on this. Please assign me this issue.