feat: solved day 16 part 2

16/ReindeerMaze/Direction.cs

@@ -0,0 +1,9 @@
+namespace ReindeerMaze;
+
+record Direction(int Xd, int Yd)
+{
+  public static readonly Direction Up = new(0, -1);
+  public static readonly Direction Down = new(0, 1);
+  public static readonly Direction Left = new(-1, 0);
+  public static readonly Direction Right = new(1, 0);
+}