[V2] Stand up staging environment

[bora-skylight]

Acceptance Criteria

• Provision a resource group for an environment called Staging using Terraform
• Deploy frontend & OCR API to it
• Ensure frontend is publicly accessible with URL
• Add capability in github actions to automatically deploy Main branch to this environment once a new commit is merged

What we need to do before being able to deploy to a staging environment:

• Ensure TLS is enabled properly
• Setup process to auto-wipe demo environments on a cron, timer or multiple times a day.
• Banner for non-production saying something like: "DO NOT USE PERSONAL INFORMATION! THIS IS NOT A PRODUCTION ENVIRONMENT!"

Stretch goals:

• Make it so networks are already provisioned before Terraform is applied. This will better prepare us if and/or when we request for a CDC owned Azure account. Currently we are creating our networks every time we create a new environment and that is not how the CDC operates in the cloud.