INFRA: AWS App and model hosting

[janaka]

Is your feature request related to a problem? Please describe. On-click deployment to AWS for both the app and model hosting.

Describe the solution you'd like

• Generate Cfn from CDK.
• Check in the Cfn template into repo so it can be referenced directly and publicly so the LaunchStack URL will work.
• Use Elastic Beanstalk

Describe alternatives you've considered

Additional context