Added gui version and basic scorehandler

Memory.Logic/Game.cs

@@ -1,10 +1,11 @@
 namespace Memory.Logic
 {
-    public class Game
+    public class Game(IScoreHandler scoreHandler)
     {
         public const int DECKSIZE = 10;
         public const int GRIDSIZE = 5;
         public List<Card> Cards { get; } = CreateDeck(DECKSIZE);
+        public IScoreHandler ScoreHandler { get; } = scoreHandler;
 
         private static List<Card> CreateDeck(int pairs)
         {

Memory.Logic/IScoreHandler.cs

@@ -0,0 +1,6 @@
+namespace Memory.Logic
+{
+    public interface IScoreHandler
+    {
+    }
+}