<!--- Verify first that your feature was not already discussed on GitHub -->
<!--- Complete *all* sections as described, this form is processed automatically -->

##### SUMMARY
<!--- Describe the new feature/improvement briefly below -->
Atm, there is no way to put the server in rescue mode

##### ISSUE TYPE
- Feature Idea

##### COMPONENT NAME
<!--- Write the short name of the module, plugin, task or feature below, use your best guess if unsure -->
hcloud_server

##### ADDITIONAL INFORMATION
<!--- Describe how the feature would be used, why it is needed and what it would solve -->
Atm, Since I can use the hetzner api, I'm using the following code to put it into rescue:
<!--- Paste example playbooks or commands between quotes below -->
```yaml
    - name: Enable rescue
      uri:
        url: "https://api.hetzner.cloud/v1/servers/{{ item }}/actions/enable_rescue"
        method: POST
        status_code: 201
        body_format: json
        body:
          type: "linux64"
          ssh_keys: [341997]
        headers:
          Content-Type: "application/json"
          Authorization: "Bearer {{ hostvars['localhost']['hetzner_api_token'] }}"
      with_items:
        - "{{ server_id }}"
```

<!--- HINT: You can also paste gist.github.com links for larger files -->

def __init__(self, module):
        Hcloud.__init__(self, module, "hcloud_server")
        self.hcloud_server = None
    def _prepare_result(self):
        return {
            "id": to_native(self.hcloud_server.id),
            "name": to_native(self.hcloud_server.name),
            "ipv4_address": to_native(self.hcloud_server.public_net.ipv4.ip),
            "ipv6": to_native(self.hcloud_server.public_net.ipv6.ip),
            "image": to_native(self.hcloud_server.image.name),
            "server_type": to_native(self.hcloud_server.server_type.name),
            "datacenter": to_native(self.hcloud_server.datacenter.name),
            "location": to_native(self.hcloud_server.datacenter.location.name),
            "rescue_enabled": self.hcloud_server.rescue_enabled,
            "backup_window": to_native(self.hcloud_server.backup_window),
            "labels": self.hcloud_server.labels,
            "status": to_native(self.hcloud_server.status),
        }
    def _get_server(self):