Add API to list tags (#5850)

* Add API to list tags

* update dependency gitea sdk vendor

* fix swagger generation

* fix swagger

* add tests

* update code.gitea.io/git vendor

vendor/code.gitea.io/git/repo_tag.go

@@ -103,26 +103,18 @@ func (repo *Repository) GetTagInfos() ([]*Tag, error) {
 	}
 
 	tagNames := strings.Split(stdout, "\n")
-	var tags []*Tag
+	var tags = make([]*Tag, 0, len(tagNames))
 	for _, tagName := range tagNames {
 		tagName = strings.TrimSpace(tagName)
 		if len(tagName) == 0 {
 			continue
 		}
-		commitID, err := NewCommand("rev-parse", tagName).RunInDir(repo.Path)
+
+		tag, err := repo.GetTag(tagName)
 		if err != nil {
 			return nil, err
 		}
-		commit, err := repo.GetCommit(commitID)
-		if err != nil {
-			return nil, err
-		}
-		tags = append(tags, &Tag{
-			Name:    tagName,
-			Message: commit.Message(),
-			Object:  commit.ID,
-			Tagger:  commit.Author,
-		})
+		tags = append(tags, tag)
 	}
 	sortTagsByTime(tags)
 	return tags, nil