added mask_non_max_merge to quick imports

supervision/__init__.py

@@ -79,6 +79,7 @@ from supervision.detection.utils.iou_and_nms import (
     box_non_max_suppression,
     mask_iou_batch,
     mask_non_max_suppression,
+    mask_non_max_merge,
     oriented_box_iou_batch,
 )
 from supervision.detection.utils.masks import (
@@ -222,6 +223,7 @@ __all__ = [
     "list_files_with_extensions",
     "mask_iou_batch",
     "mask_non_max_suppression",
+    "mask_non_max_merge",
     "mask_to_polygons",
     "mask_to_rle",
     "mask_to_xyxy",