<!--- 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 -->
In gitlab_hook module doesn't have parameter "Comment" which is necessary for my DevOps flow and generally very useful for triggering a job. Without this option, I and a lot of people cannot use this module fully. 

##### ISSUE TYPE
- Feature Idea

##### COMPONENT NAME
<!--- Write the short name of the module, plugin, task or feature below, use your best guess if unsure -->
https://docs.ansible.com/ansible/latest/modules/gitlab_hook_module.html

##### ADDITIONAL INFORMATION
<!--- Describe how the feature would be used, why it is needed and what it would solve -->
1. I use the newest version of ansible.
2. It's about this option in gitlab:
[![comments.png](https://i.postimg.cc/C5tkJdJ7/comments.png)](https://postimg.cc/sGYMgjkG)
<!--- Paste example playbooks or commands between quotes below -->
```yaml

```

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

argument_spec = basic_auth_argument_spec()
    argument_spec.update(dict(
        api_token=dict(type='str', no_log=True, aliases=["private_token", "access_token"]),
        state=dict(type='str', default="present", choices=["absent", "present"]),
        project=dict(type='str', required=True),
        hook_url=dict(type='str', required=True),
        push_events=dict(type='bool', default=True),
        issues_events=dict(type='bool', default=False),
        merge_requests_events=dict(type='bool', default=False),
        tag_push_events=dict(type='bool', default=False),
        note_events=dict(type='bool', default=False),
        job_events=dict(type='bool', default=False),
        pipeline_events=dict(type='bool', default=False),
        wiki_page_events=dict(type='bool', default=False),
        hook_validate_certs=dict(type='bool', default=False, aliases=['enable_ssl_verification']),
        token=dict(type='str', no_log=True),
    ))
    module = AnsibleModule(
        argument_spec=argument_spec,
        mutually_exclusive=[
            ['api_username', 'api_token'],
            ['api_password', 'api_token']
        ],
        required_together=[
            ['api_username', 'api_password']
        ],
        required_one_of=[
            ['api_username', 'api_token']
        ],
        supports_check_mode=True,