重命名包 client 为 edge；重命名包 server 为 gateway

cmd/server/main.go

@@ -1,11 +1,11 @@
 package main
 
 import (
-	"proxy-server/server"
+	"proxy-server/gateway"
 )
 
 func main() {
-	var app = server.New()
+	var app = gateway.New()
 	var err = app.Run()
 	if err != nil {
 		println(err.Error())