Initial Python rewrite

src.bak/main/java/com/example/dto/dialogflow/conversation/QueryInputDTO.java

@@ -0,0 +1,16 @@
+/*
+ * Copyright 2025 Google. This software is provided as-is, without warranty or representation for any use or purpose. 
+ * Your use of it is subject to your agreement with Google.
+ */
+
+package com.example.dto.dialogflow.conversation;
+
+
+
+import com.example.dto.dialogflow.notification.EventInputDTO;
+
+public record QueryInputDTO(
+    TextInputDTO text,  // Can be null if using event
+    EventInputDTO event,
+    String languageCode // REQUIRED for both text and event inputs
+) {}