Feature: local socks5/http(s) auth (#216)

proxy/auth/auth.go

@@ -0,0 +1,17 @@
+package auth
+
+import (
+	"github.com/Dreamacro/clash/component/auth"
+)
+
+var (
+	authenticator auth.Authenticator
+)
+
+func Authenticator() auth.Authenticator {
+	return authenticator
+}
+
+func SetAuthenticator(au auth.Authenticator) {
+	authenticator = au
+}