InterfaceAuthenticationStrategyHTTP代理认证逻辑 基于请求头proxy-authorization实现 具体规范参考<a href="https://developer.mozilla.org/zh-CN/docs/Web/HTTP/Headers/Proxy-Authorization" /> @see HttpHeade
client/src/main/java/com/lzf/flyingsocks/client/proxy/http/AuthenticationStrategy.java:39