<!--- 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 -->

- User Data to be passed to the server on creation.
            - Only used if server does not exists.
        type: str
    labels:
        description:
            - User-defined labels (key-value pairs).
        type: dict
    state:
        description:
            - State of the server.
        default: present
        choices: [ absent, present, restarted, started, stopped, rebuild ]
        type: str
extends_documentation_fragment: hcloud
"""
EXAMPLES = """
- name: Create a basic server
  hcloud_server:
    name: my-server
    server_type: cx11
    image: ubuntu-18.04
    state: present
- name: Create a basic server with ssh key
  hcloud_server:
    name: my-server
    server_type: cx11
    image: ubuntu-18.04
    location: fsn1
    ssh_keys:
      - me@myorganisation