squash a bunch of commits

Shogi.Contracts/Types/Move.cs

@@ -0,0 +1,12 @@
+namespace Shogi.Contracts.Types
+{
+  public class Move
+  {
+    public WhichPiece? PieceFromCaptured { get; set; }
+    /// <summary>Board position notation, like A3 or G1</summary>
+    public string? From { get; set; }
+    /// <summary>Board position notation, like A3 or G1</summary>
+    public string To { get; set; } = string.Empty;
+    public bool IsPromotion { get; set; }
+  }
+}