Feat: format code in one-key (#719)

Co-authored-by: Loyalsoldier <10487845+Loyalsoldier@users.noreply.github.com>

core/format.go

@@ -0,0 +1,4 @@
+package core
+
+//go:generate go install -v golang.org/x/tools/cmd/goimports@latest
+//go:generate go run ../infra/vformat/

core/xray_test.go

@@ -4,6 +4,7 @@ import (
 	"testing"
 
 	"github.com/golang/protobuf/proto"
+
 	"github.com/xtls/xray-core/app/dispatcher"
 	"github.com/xtls/xray-core/app/proxyman"
 	"github.com/xtls/xray-core/common"