CI/CD Pipeline

General Workflow for Terraform CI/CD.

1. `tf env` 2. `tf init` 3. `tf fmt` 4. `tf validate` 5. `tf lint` 6. `tf sec` 7. `tf plan` 8. `infracost` 9. `tf approval` 10. `chatops` 11. `tf apply` 12. `tf output` 13. `tf graph` 14. `chatops`