Add system spec for /.well-known/change-password route feature
user
```ruby
# frozen_string_literal: true

require 'rails_helper'

describe '/.well-known/change-password' do
  it 'when user successfully redirected to change password form' do
    user = create(:user, email: 'me@example.com', password: 'eidii7EeooVe8ahk')

    visit '/sign_in'

    fill_in 'email', with: 'me@example.com'
    fill_in 'password', with: 'eidii7EeooVe8ahk'
    find('#sign_in_button').click # TODO: click on 'Sign In'

    visit '/.well-known/change-password'

    expect(current_path).to eq('/change_password')

    expect(page).to have_content('Change password')

    expect(page).to have_content('Current password (leave empty if you are Sign up via Eve Online SSO)')

    expect(page).to have_content('New password')

    expect(page).to have_content('New password confirmation')
  end
end
```
assistant