Issue description

I found that there was once a PR about real_ip_recursive: #4332
But it seems that the real-ip plugin does not have recursive related configuration items. In fact, I looked at the real-ip code and it seems that there is no related implementation. Is there any other way to achieve it? The current scenario is to configure it in the global plugin. real-ip for dynamic modification, looking forward to reply, thanks!

Environment

• apisix version (cmd: apisix version): latest
• OS (cmd: uname -a):
• OpenResty / Nginx version (cmd: nginx -V or openresty -V):
• etcd version, if have (cmd: run curl http://127.0.0.1:9090/v1/server_info to get the info from server-info API):
• apisix-dashboard version, if have:
• the plugin runner version, if the issue is about a plugin runner (cmd: depended on the kind of runner):
• luarocks version, if the issue is about installation (cmd: luarocks --version):