proper folder structure

* Added missing HistoryResponse Error codes, introduced by Rate Limiting non relay protocol

* Found I misstyped name of the Error code (already fixed in jswaku))

waku/store/v2beta4/store.proto

@@ -43,6 +43,8 @@ message HistoryResponse {
   enum Error {
     NONE = 0;
     INVALID_CURSOR = 1;
+    TOO_MANY_REQUESTS = 429;
+    SERVICE_UNAVAILABLE = 503;
   }
   Error error = 4;
 }

waku/sync/transfer/v1/transfer.proto

@@ -0,0 +1,11 @@
+syntax = "proto3";
+
+package waku.sync.transfer.v1;
+
+import "waku/message/v1/message.proto";
+
+message WakuMessageAndTopic {
+  // Full message content and associated pubsub_topic as value
+  optional waku.message.v1.WakuMessage message = 1;
+  optional string pubsub_topic = 2;
+}