Implement a 'cos' option for 'outputs' to store assets on COS?

The way to store outputs on Cloud Object Storage is:
```
'output_data_references': [{
    'id': '.*\\.*',
    'type': 'connection_asset',
    'connection': {'href': f'/v2/connections/{CONNECTION_ID}?space_id={SPACE_ID}'},
    'location': {
        'bucket': f'{BUCKET_NAME}',
        'file_name': '${job_id}/${attachment_name}'
    }
}]
```