Create Github Action Pipelines

[tranguyen221]

We want to extend the devops pipeline to integrate github actions and infrastructure-as-code with terraform scripts. The resulting devops repo may follow this structure:

devops-pipelines

• .ado
  • pipeline-0 IaC with ARM templates (current)
  • pipeline-1
  • ....
• .github
  • pipeline-0 IaC with Terraform templates
  • pipeline-1
  • ....