Add `hashPassword()` and `verifyPassword()` server utils

[atinux]

// import is optional
import { hashPassword, verifyPassword } from '#auth-utils'

const hash = hashPassword('user_password')
// $2a$10$vEdoE9pqBlkJMqWmbk1JWuEYbJoansodgPo7a2GBkXsO8SleGXCr6

if (verifyPassword(existingHash, plainTextValue)) {
  // password is correct
}

Demo from bcrypt-edge on https://github.com/atinux/nuxt-bcrypt-edge

The second argument of hashPassword is the same as hashSync

const hash = hashPassword('use_password', 12)