refact: mark LabelledData as exportable

Author: boriel

src/arch/z80/visitor/translator.py

@@ -25,7 +25,10 @@
 from src.symbols.id_ import ref
 from src.symbols.type_ import Type
 
-__all__ = ("Translator",)
+__all__ = (
+    "LabelledData",
+    "Translator",
+)
 
 LabelledData = namedtuple("LabelledData", ("label", "data"))