refactor(recipe): move Tags method to new struct

pkg/recipe/git.go

@@ -262,3 +262,29 @@ func (r Recipe2) Push(dryRun bool) error {
 
 	return nil
 }
+
+// Tags list the recipe tags
+func (r Recipe2) Tags() ([]string, error) {
+	var tags []string
+
+	repo, err := git.PlainOpen(r.Dir)
+	if err != nil {
+		return tags, err
+	}
+
+	gitTags, err := repo.Tags()
+	if err != nil {
+		return tags, err
+	}
+
+	if err := gitTags.ForEach(func(ref *plumbing.Reference) (err error) {
+		tags = append(tags, strings.TrimPrefix(string(ref.Name()), "refs/tags/"))
+		return nil
+	}); err != nil {
+		return tags, err
+	}
+
+	log.Debugf("detected %s as tags for recipe %s", strings.Join(tags, ", "), r.Name)
+
+	return tags, nil
+}