<!--- 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 -->

hcloud_server:
    description: The server instance
    returned: Always
    type: dict
    sample: {
        "backup_window": null,
        "datacenter": "nbg1-dc3",
        "id": 1937415,
        "image": "ubuntu-18.04",
        "ipv4_address": "116.203.104.109",
        "ipv6": "2a01:4f8:1c1c:c140::/64",
        "labels": {},
        "location": "nbg1",
        "name": "mein-server-2",
        "rescue_enabled": false,
        "server_type": "cx11",
        "status": "running"
    }
"""
from ansible.module_utils.basic import AnsibleModule
from ansible.module_utils._text import to_native
from ansible.module_utils.hcloud import Hcloud
try:
    from hcloud.volumes.domain import Volume
    from hcloud.ssh_keys.domain import SSHKey
    from hcloud.servers.domain import Server
    from hcloud import APIException
except ImportError:
    pass
class AnsibleHcloudServer(Hcloud):