adds docker and kubernetes support for moroz

[pmdroid]

# Pull Request Summary

**Adds Docker and Kubernetes support for Moroz:**

- **Docker**: Multi-stage build with Go 1.23, security hardening (non-root user), health checks, and multi-platform support (AMD64/ARM64)
- **CI/CD**: GitHub Actions workflow for automated builds and publishing to GitHub Container Registry
- **Kubernetes**: Complete deployment manifests with security best practices, resource limits, and health probes
- **Health endpoint**: New `/health` route for container monitoring
- **Sample config**: ConfigMap with example Moroz rules for different policy types

Enables containerized deployment with `kubectl apply -k deploy/` or using pre-built images from ghcr.io.