serializable image

interface/image/Image.py

+import json
+
+
 class Image:
     def __init__(self, id, name, format) -> None:
         super().__init__()
@@ -5,3 +8,9 @@ class Image:
         self.id = id
         self.name = name
         self.format = format
+
+    def __str__(self) -> str:
+        return self.toJSON()
+
+    def toJSON(self):
+        return json.dumps(self.__dict__)