supports local file system object storage and use it as the default avatar provider

pkg/storage/storage.go

@@ -0,0 +1,9 @@
+package storage
+
+// ObjectStorage represents an object storage to store file object
+type ObjectStorage interface {
+	Exists(path string) (bool, error)
+	Read(path string) (ObjectInStorage, error)
+	Save(path string, object ObjectInStorage) error
+	Delete(path string) error
+}