add golangci feature to guarantee codes quality (#2229)

example/config/kubecm/boot_out_pod/boot.go

@@ -1,11 +1,10 @@
 package boot
 
 import (
-	"k8s.io/client-go/kubernetes"
-
 	"github.com/gogf/gf/contrib/config/kubecm/v2"
 	"github.com/gogf/gf/v2/frame/g"
 	"github.com/gogf/gf/v2/os/gctx"
+	"k8s.io/client-go/kubernetes"
 )
 
 const (

example/config/nacos/main.go

@@ -2,6 +2,7 @@ package nacos
 
 import (
 	_ "github.com/gogf/gf/example/config/nacos/boot"
+
 	"github.com/gogf/gf/v2/frame/g"
 	"github.com/gogf/gf/v2/os/gctx"
 )

example/config/polaris/main.go

@@ -2,6 +2,7 @@ package polaris
 
 import (
 	_ "github.com/gogf/gf/example/config/polaris/boot"
+
 	"github.com/gogf/gf/v2/frame/g"
 	"github.com/gogf/gf/v2/os/gctx"
 )