chore: improve golangci-lint.yml, upgrade dependencies, and optimize code and comments (#4025)

os/gres/gres_file.go

@@ -15,6 +15,7 @@ import (
 	"github.com/gogf/gf/v2/internal/json"
 )
 
+// File is a file in a zip file.
 type File struct {
 	file     *zip.File
 	reader   *bytes.Reader

os/gres/gres_resource.go

@@ -20,6 +20,7 @@ import (
 	"github.com/gogf/gf/v2/text/gstr"
 )
 
+// Resource is the resource manager for the file system.
 type Resource struct {
 	tree *gtree.BTree
 }