Add convenience constructor to ComplexPolygon

Author: stefannikolei

src/ImageSharp.Drawing/Shapes/ComplexPolygon.cs

@@ -20,6 +20,16 @@ public sealed class ComplexPolygon : IPath, IPathInternals, IInternalPathOwner
         private readonly List<InternalPath> internalPaths;
         private readonly float length;
 
+        /// <summary>
+        /// Initializes a new instance of the <see cref="ComplexPolygon"/> class.
+        /// </summary>
+        /// <param name="contour">The contour path</param>
+        /// <param name="hole">the hole path</param>
+        public ComplexPolygon(PointF[] contour, PointF[] hole)
+            : this(new Path(new LinearLineSegment(contour)), new Path(new LinearLineSegment(hole)))
+        {
+        }
+
         /// <summary>
         /// Initializes a new instance of the <see cref="ComplexPolygon" /> class.
         /// </summary>