feat(message.py): add Message.to_bytes()

src/judas_protocol/message.py

@@ -48,6 +48,14 @@ class Message:
         """
         return json.dumps(self.to_dict())
 
+    def to_bytes(self) -> bytes:
+        """Convert the message to bytes.
+
+        Returns:
+            bytes: The message as bytes.
+        """
+        return self.to_json().encode("utf-8")
+
     @classmethod
     def from_dict(cls, data: dict[str, Any]) -> Message:
         """Create a Message from a dictionary.