Add Change reverse DNS entry for this Server Action

[CubitsDev]

Affects:

Server Actions

Need for this:

Links the Change reverse DNS entry for this Server action API

Hetzner API documentation

https://docs.hetzner.cloud/#server-actions-change-reverse-dns-entry-for-this-server

Tasks

• Implement method on Server class
• Add new Action enum
• Implement change in ServerChangeListener
• Implement change in ServerService
• Add testing