Slight cleanup, do some TODOs

PkmnLib.Dynamic/BattleFlow/MoveTurnExecutor.cs

@@ -132,7 +132,7 @@ public static class MoveTurnExecutor
         target.RunScriptHook(x => x.IsInvulnerableToMove(executingMove, target, ref isInvulnerable));
         if (isInvulnerable)
         {
-            // TODO: event?
+            battle.EventHook.Invoke(new MoveInvulnerableEvent(executingMove, target));
             return;
         }