Support clearing a battle on demand

PkmnLibSharp/Battling/Battle/Battle.cs

@@ -59,6 +59,8 @@ namespace PkmnLibSharp.Battling
         public ulong MonsPerSide => Creaturelib.Generated.Battle.GetCreaturesPerSide(Ptr);
         public long LastTurnTimeMicroseconds => Creaturelib.Generated.Battle.GetLastTurnTimeMicroseconds(Ptr);
 
+        private bool _cleared;
+
         public ReadOnlyNativePtrArray<BattleSide> Sides
         {
             get
@@ -228,6 +230,14 @@ namespace PkmnLibSharp.Battling
         private ReadOnlyNativePtrArray<BattleSide>? _sides;
         private ReadOnlyNativePtrArray<BattleParty>? _parties;
         private HistoryHandler? _history;
+
+        public void ClearBattle()
+        {
+            if (_cleared)
+                return;
+            _cleared = true;
+            Creaturelib.Generated.Battle.ClearBattle(Ptr);
+        }
         
         protected override void DeletePtr()
         {
@@ -238,7 +248,7 @@ namespace PkmnLibSharp.Battling
         {
             if (!IsDeleted)
             {
-                Creaturelib.Generated.Battle.ClearBattle(Ptr);
+                ClearBattle();
             }
             base.Dispose();
         }