Function create_forward_draft 

pub async fn create_forward_draft(
    http: &Client,
    base_url: &str,
    access_token: &str,
    message_id: &str,
    to: &[String],
    comment: &str,
) -> Result<String, ClientError>

POST /me/messages/{id}/createForward: create a forward draft with the given recipients already populated.