Add form validation - Login page

[rathorevaibhav]

Description

Form validation is an important part of any application. We need to add validation to the login page and if it fails, it should show the corresponding error messages for every field.

Acceptance criteria

In the Tides login page, the following error messages should show up:

1. The email should be a valid email.
2. The password must be minimum of 8 characters.