Add CD to automate workflows for deployment

[benjaminkostiuk]

• Add Github actions to automate CD workflows
• Investigate deployments and hosting on MS Azure
• Procure domain for puff with Student Starter for MS Azure

• Deploy course-management using app service + automated workflow
• Deploy test-runner using app service + automated workflow
• Deploy config-server using app service + automated workflow
• Deploy keycloak server connected to the hosted MySQL database.
• Setup and configure APIM with endpoints for each service
  • Setup throttling
• Setup a hosted MySQL database with databases for each env (30%)
• Secure a domain for puff: purchased puff.codes
• Configure subdomain for api calls api.puff.codes with CNAME record
• Configure an email domain for puff ($2.18/month) + update repos
• Restrict IP firewall for microservices to only accept requests from APIM to reduce individual security
• Switch over to using MS key vault for application secrets instead of the app service page for passwords and credentials.