Generate route with prefix (#1200)

* Generate route with prefix

* Update api convert

* Remove TrimSpace

* Update path join

* Format code

* Format code

Co-authored-by: anqiansong <anqiansong@bytedance.com>

tools/goctl/api/ktgen/cmd.go

@@ -27,6 +27,7 @@ func KtCommand(c *cli.Context) error {
 		return e
 	}
 
+	api.Service = api.Service.JoinPrefix()
 	e = genBase(dir, pkg, api)
 	if e != nil {
 		return e