Feature/#141 Terraform and Google Cloud Deploy process

[flxtagi]

• Docker container from branch #151 is already used and merged in this workflow
• current main branch is merged in.
• github action is called deploy-to-GCP
• builds container at github and then pushes to europe-west6-docker.pkg.dev registry at google
• fixed all permissions and roles for terraform to work and build cloudrunner
• fixed github permissions to allow deployment
• updated README.
• terraform files are documented
• runs on https://app-pizza-hawaii-rcosriwdxq-oa.a.run.app/

still missing: readme-howto update creating workload identity provider that auth works from github to google Cloud push and deploy. would be a bunch of commands. no idea if the readme is the correct location for that.