Add retrieve_data method to receiver

src/AsapoWorker/asapo_receiver.py

@@ -166,6 +166,12 @@ class SimpleAsapoReceiver:
         except asapo_consumer.AsapoConsumerError as err:
             raise StreamError("Failed to get stream meta") from err
 
+    def retrieve_data(self, meta):
+        try:
+            return self.consumer.retrieve_data(meta)
+        except asapo_consumer.AsapoConsumerError as err:
+            raise StreamError("Failed to retrieve data") from err
+
 
 # TODO: Ensure also that indices are consecutive or start at 0
 @Configurable