GRM-14: feat: add systemd template units and multi-instance Ansible support
- Add instance-scoped base data/config directories in defaults
- Create gitea-runner@.service.j2 template supporting Docker and binary modes
- Refactor service.yml to install systemd template unit instances
- Remove direct container lifecycle from docker_mode.yml (delegate to systemd)
- Add deregister.yml for runner deregistration on disable/remove
- Create lifecycle playbooks: start, stop, enable, disable, status, remove
- Update handlers, integration_test, docker_update, binary_update for template units
Emil Simeonov
e5964ca5a9