don't use a static login UI and use the Cognito UI for more functionalities

[jeffsec-aws]

Is your feature request related to a problem? Please describe.
Yes as it will be an easier way to answer also issues #4 and #5

Describe the feature you'd like
Use the Cognito Hosted UI instead of a static login UI with the pattern used at https://github.com/awslabs/cognito-at-edge

This will allow you to support natively :

• Identity Federation from social login
• Identity Federation from Enterprise IdP
• multi factor authentication
• password reset and recovery
• Self-service sign-up

[knihit]

Thank you for the suggestion. The solution uses Amplify signin UI component. We will do a due diligence to compare our current implementation and Cognito hosted UI, evaluate the pros/ cons and make a decision for future iterations. Adding this as a spike for our future sprints.