HOLI-2122: setup ci + deployment

.gitlab-ci.yml

deno.json

terraform/.gitignore

terraform/common/.envrc

terraform/common/dns.tf

terraform/common/init.tf

terraform/common/service_account.tf

terraform/environments/.envrc

terraform/environments/deployment.tf

terraform/environments/dns.tf

terraform/environments/init.tf

terraform/environments/scripts/create-or-update-env.sh

terraform/environments/scripts/destroy-env.sh

terraform/environments/scripts/get-api-domain.sh

terraform/environments/scripts/wait-for-ssl.sh

terraform/environments/vars.tf