Added support for link areas.

Runtime/SplineImporter.cs

@@ -76,6 +76,7 @@ namespace FrameJosh.SplineImporter
                         endPoint = endHit.position;
                     link.startPoint = startPoint;
                     link.endPoint = endPoint;
+                    link.area = NavMesh.GetAreaFromName(splineImporter.area);
                     Undo.RegisterCreatedObjectUndo(go, $"Create link from {startPoint} to {endPoint}");
 #endif
                 }
@@ -146,8 +147,8 @@ namespace FrameJosh.SplineImporter
     {
 #if UNITY_EDITOR
         public TextAsset splineData;
-
         public float3 scale = new(1f, 1f, 1f);
+        public string area = "Walkable";
 #endif
     }
 #if UNITY_EDITOR