Update proto definitions

ozon/products.proto

@@ -32,22 +32,27 @@ message Product {
   Stocks stocks = 3;
   repeated string barcodes = 4;
   Status statuses = 5;
+  repeated Error errors = 6;
 
   message Status {
     string status_name = 1;
   }
 
-
   message Stocks{
     repeated Stock stocks = 1;
     bool has_stock = 2;
   }
+
   message Stock{
     int64 present = 1;
     int64 reserved = 2;
     int64 SKU = 3;
     string source = 4;
   }
+
+  message Error{
+    string code = 1;
+  }
 }