Problem
Having a secure password is a very important practice, when much of our information is stored online. Write a program that validates a new password, following these rules:
• The password must be at least 8 characters long.
• The password must have at least one uppercase and one lowercase letter
• The password must have at least one digit. Write a program that asks for a password, then asks again to confirm it. If the passwords don't match or the rules are not fulfilled, prompt again. Your program should include a method that checks whether a password is valid.