chore: import upstream snapshot with attribution

python/ray/train/lightgbm/__init__.py

@@ -0,0 +1,23 @@
+from ray.train.lightgbm._lightgbm_utils import (
+    RayTrainReportCallback,
+    normalize_pandas_for_lightgbm,
+)
+from ray.train.lightgbm.config import LightGBMConfig, get_network_params
+from ray.train.lightgbm.lightgbm_checkpoint import LightGBMCheckpoint
+from ray.train.lightgbm.lightgbm_trainer import LightGBMTrainer
+from ray.train.v2._internal.constants import is_v2_enabled
+
+if is_v2_enabled():
+    from ray.train.v2.lightgbm.lightgbm_trainer import LightGBMTrainer  # noqa: F811
+
+__all__ = [
+    "RayTrainReportCallback",
+    "LightGBMCheckpoint",
+    "LightGBMTrainer",
+    "LightGBMConfig",
+    "get_network_params",
+    "normalize_pandas_for_lightgbm",
+]
+
+
+# DO NOT ADD ANYTHING AFTER THIS LINE.