docs: add console screenshots to READMEs

README.md

@@ -23,6 +23,10 @@ Replace the sample password with your own, then sign in at `http://YOUR_SERVER_I
 
 `YOUR_SERVER_IP` is your server's IP address. To use a domain name, configure HTTPS on a reverse proxy and forward requests to port 8080 on the server.
 
+## Screenshot
+
+![LAYA SERVER Playground](docs/images/screenshot-en.png)
+
 ## Call the API
 
 ```sh

README.zh-CN.md

@@ -23,6 +23,10 @@ docker run -d --name laya-server --init --restart unless-stopped \
 
 `YOUR_SERVER_IP` 是服务器 IP。若通过域名访问，可在反向代理上配置 HTTPS 并转发到服务器的 8080 端口。
 
+## 界面截图
+
+![LAYA SERVER 控制台](docs/images/screenshot-cn.png)
+
 ## 调用 API
 
 ```sh