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/solutions.py

@@ -50,10 +50,12 @@ class BaseSolution:
         """
         check_requirements("shapely>=2.0.0")
         from shapely.geometry import LineString, Point, Polygon
+        from shapely.prepared import prep
 
         self.LineString = LineString
         self.Polygon = Polygon
         self.Point = Point
+        self.prep = prep
 
         # Load config and update with args
         DEFAULT_SOL_DICT.update(kwargs)