Initial Python rewrite

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

@@ -0,0 +1,20 @@
+/*
+ * 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.fasterxml.jackson.annotation.JsonIgnoreProperties;
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+@JsonIgnoreProperties(ignoreUnknown = true)
+public record ExternalConvRequestDTO(
+    @JsonProperty("mensaje") String message,
+    @JsonProperty("usuario") UsuarioDTO user,
+    @JsonProperty("canal") String channel,
+    @JsonProperty("tipo") ConversationEntryType tipo,
+    @JsonProperty("pantallaContexto") String pantallaContexto //optional field for quick-replies
+) {
+    public ExternalConvRequestDTO {}
+    }