Implements accuracy/evasion

PkmnLib.Dynamic/Libraries/BattleStatCalculator.cs

@@ -27,4 +27,9 @@ public interface IBattleStatCalculator
     /// Calculate a single boosted stat of a Pokemon, including stat boosts.
     /// </summary>
     uint CalculateBoostedStat(IPokemon pokemon, Statistic stat);
+    
+    /// <summary>
+    /// Calculates the accuracy for a move, taking into account any accuracy modifiers.
+    /// </summary>
+    byte CalculateModifiedAccuracy(IExecutingMove executingMove, IPokemon target, byte hitIndex, byte moveAccuracy);
 }