feat: support image generation

[RidiculousDoge]

使用openai的nodejs库，添加图片生成功能
使用方式：
/image 提示词

[bestony]

是不是可以考虑将其变成飞书自己的图片？

[RidiculousDoge]

飞书bot根据url生成图片的接口似乎不是很好用，目测需要下载成二进制然后上传图片，我调用飞书的上传图片接口的时候没拿到飞书的响应

async function getImageData(url) {
  return new Promise((resolve, reject) => {
    https.get(url, (response) => {
      const { statusCode } = response;
      const contentType = response.headers["content-type"];

      if (statusCode !== 200) {
        reject(new Error(`请求失败了: 状态码: ${statusCode}`));
        response.resume();
        return;
      }

      if (!/^image\//.test(contentType)) {
        reject(new Error(`无效的内容类型: ${contentType}`));
        response.resume();
        return;
      }

      let imageData = Buffer.from([]);

      response
        .on("data", (chunk) => {
          imageData = Buffer.concat([imageData, chunk]);
        })
        .on("end", () => {
          resolve(imageData);
        })
        .on("error", (error) => {
          reject(error);
        });
    });
  });
}


async function uploadImage(imageData,url){
  logger("upload image!");
  let resp = await client.im.image.create({
    data:{
      image_type:"message",
      image: imageData
    }
  });
  logger(console.dir(resp));
  if(resp.code!=0){
    return;
  }
  await ImageTable.save({url:url,image_key:resp.data.image_key});
  return resp.data.image_key;
}