Migrates `act_runner` configuration from shell-generated to an Ansible-templated `config.yaml`. This enables:
- Dynamic label provisioning, including `test-runner:docker://ubuntu:22.04`.
- Explicit configuration for joining the `iklimco-net` overlay network.
- Docker socket mounting for CI/CD jobs to interact with the Docker daemon.
Updates `setup/05-test-runner-ve-deploy-onkosullari.md` and other related documentation to reflect the new automated and integrated runner setup.
- Add `hetzner-sizing-report.md` defining data-driven server type recommendations for test and prod environments.
- Update Terraform configurations to align with the recommended `CPX` server types and refine firewall rules for Docker Swarm and database interactions.
- Introduce comprehensive documentation and stack files for:
- Single-node PostgreSQL/MongoDB deployment on a test DB worker node.
- High-availability 3-node MongoDB replica set and Patroni+etcd PostgreSQL cluster for production.
- Enhance Ansible bootstrap roles with SELinux disabling, fail2ban configuration, and StorageBox SSH key management for CI/CD.
- Reorganize and rename setup documentation files for improved structure and clarity.
