dynamically import all catalog games and update __all__ accordingly

Author: edwardchalstrey1

src/pygambit/catalog/__init__.py

@@ -1,13 +1,16 @@
-from .catalog import (
-    PrisonersDilemma,
-    PrisonersDilemmaTestgame,
-    TwoStageMatchingPennies,
-    games,
-)
-
-__all__ = [
-    "games",
-    "PrisonersDilemma",
-    "TwoStageMatchingPennies",
-    "PrisonersDilemmaTestgame"
-]
+from .catalog import games
+
+# Dynamically import all catalog games
+_all_games = games()
+_game_classes = {}
+
+for game_name in _all_games:
+    # Import each game class from catalog module
+    from . import catalog
+    _game_classes[game_name] = getattr(catalog, game_name)
+
+# Add to module namespace
+globals().update(_game_classes)
+
+# Build __all__ dynamically
+__all__ = ["games"] + list(_all_games)  # type: ignore[assignment]