Add region counter as ultralytics solution (#17439)

Co-authored-by: UltralyticsAssistant <web@ultralytics.com>
Co-authored-by: Glenn Jocher <glenn.jocher@ultralytics.com>

ultralytics/solutions/__init__.py

@@ -7,6 +7,7 @@ from .heatmap import Heatmap
 from .object_counter import ObjectCounter
 from .parking_management import ParkingManagement, ParkingPtsSelection
 from .queue_management import QueueManager
+from .region_counter import RegionCounter
 from .speed_estimation import SpeedEstimator
 from .streamlit_inference import inference
 
@@ -21,4 +22,5 @@ __all__ = (
     "SpeedEstimator",
     "Analytics",
     "inference",
+    "RegionCounter",
 )