Extend IaC module with static IP

[LarsGJobloop]

Use Hetzner floating IP resource

[LarsGJobloop]

Look at the documentation and use one of these patterns:

• Floating IP: https://registry.terraform.io/providers/hetznercloud/hcloud/latest/docs/resources/floating_ip
• Floating IP Assignemnt: https://registry.terraform.io/providers/hetznercloud/hcloud/latest/docs/resources/floating_ip_assignment