🚑 Fix #38 again

Add set_completer_delims(), set_completer() for fake readline

src/translate_shell/external/readline/__main__.py

@@ -7,6 +7,8 @@
 `readline <https://docs.python.org/3/library/readline.html>`_.
 """
 
+from collections.abc import Callable
+
 
 def read_history_file(unused_path: str) -> None:
     """Read history file.
@@ -26,6 +28,24 @@ def write_history_file(unused_path: str) -> None:
     """
 
 
+def set_completer_delims(delims: str) -> None:
+    """Set completer delims.
+
+    :param delims:
+    :type delims: str
+    :rtype: None
+    """
+
+
+def set_completer(completer: Callable[[str, int], str]) -> None:
+    """Set completer.
+
+    :param completer:
+    :type completer: Callable[[str, int], str]
+    :rtype: None
+    """
+
+
 def add_history(unused_path: str) -> None:
     """Add history.