Add an abstract json layout to make it's easier to change json library (#16528)

* Add an abstract json layout to make it's easier to change json library

* Fix import

* Fix import sequence

* Fix blank lines

* Fix blank lines

services/pull/pull.go

@@ -16,11 +16,11 @@ import (
 	"code.gitea.io/gitea/models"
 	"code.gitea.io/gitea/modules/git"
 	"code.gitea.io/gitea/modules/graceful"
+	"code.gitea.io/gitea/modules/json"
 	"code.gitea.io/gitea/modules/log"
 	"code.gitea.io/gitea/modules/notification"
 	"code.gitea.io/gitea/modules/setting"
 	issue_service "code.gitea.io/gitea/services/issue"
-	jsoniter "github.com/json-iterator/go"
 )
 
 // NewPullRequest creates new pull request with labels for repository.
@@ -86,7 +86,6 @@ func NewPullRequest(repo *models.Repository, pull *models.Issue, labelIDs []int6
 			data.CommitIDs = append(data.CommitIDs, e.Value.(*git.Commit).ID.String())
 		}
 
-		json := jsoniter.ConfigCompatibleWithStandardLibrary
 		dataJSON, err := json.Marshal(data)
 		if err != nil {
 			return err