Begin implementing async

Solver/Crafty/Solver.cs

@@ -213,7 +213,7 @@ public class Solver
         }
     }
 
-    public void Search(CancellationToken token)
+    public void SearchThread(CancellationToken token)
     {
         Simulator simulator = new(RootNode.State.State, Config.MaxStepCount);
         for (var i = 0; i < Config.Iterations; i++)
@@ -228,6 +228,16 @@ public class Solver
         }
     }
 
+    public void Search(CancellationToken token)
+    {
+        var tasks = new Task[Config.ThreadCount];
+        for (var i = 0; i < Config.ThreadCount; ++i)
+        {
+            tasks[i] = Task.Run(() => SearchThread(token), token);
+        }
+        Task.WaitAll(tasks, token);
+    }
+
     [Pure]
     public (List<ActionType> Actions, SimulationNode Node) Solution()
     {

Solver/Crafty/SolverConfig.cs

@@ -10,6 +10,7 @@ public readonly record struct SolverConfig
     public float MaxScoreWeightingConstant { get; init; }
     public float ExplorationConstant { get; init; }
     public int MaxStepCount { get; init; }
+    public int ThreadCount { get; init; }
 
     public SolverConfig()
     {
@@ -18,5 +19,6 @@ public readonly record struct SolverConfig
         MaxScoreWeightingConstant = 0.1f;
         ExplorationConstant = 4f;
         MaxStepCount = 25;
+        ThreadCount = Environment.ProcessorCount;
     }
 }