Add proper JS validation on contact us form in home page

By adding proper validation on contact us form to prevent invalid data.
1)Add validation on empty field.
2)Email should be in correct format

By adding red border in appropriate field when any error occurs in that field.
otherwise show green border when everything is correct.

@akshitagupta15june I would like to work on this issue if you will assign me under GSSOC'23 !!

This is demo