加了个反向代理地址的配置

[KlN-4096]

加了个反向代理地址的配置,当用户设置了sessionserver.mojang.com的反向代理时,可以使用配置修改鉴权url,避免minecraft服务器需要使用代理导致玩家高ping.

因此mod可以通过我自己稳定的https://sessionproxy.example.com/session/minecraft/hasJoined?username=...&serverId=... 来进行鉴权,避免经常出现鉴权失败

示例(因为我是nginx-proxy-manager配置的反代,所以可能有些不准确,建议询问AI):
server {
listen 443 ssl;
server_name sessionproxy.example.com;

ssl_certificate /path/to/fullchain.pem;
ssl_certificate_key /path/to/privkey.pem;

location = /session/minecraft/hasJoined/ { return 308 /session/minecraft/hasJoined; }

location ^~ /session/minecraft/hasJoined {
proxy_pass https://sessionserver.mojang.com$request_uri;
proxy_set_header Host sessionserver.mojang.com;
proxy_ssl_server_name on;
proxy_ssl_name sessionserver.mojang.com;
}

location / { return 404; }
}