Actually implement handling of StopBeforeAttack script hook

src/Battling/Flow/TurnHandler.cpp

@@ -82,7 +82,11 @@ void TurnHandler::ExecuteAttackChoice(AttackTurnChoice* choice) {
         return;
     }
 
-    HOOK(StopBeforeAttack, attack, attack);
+    bool stopBeforeAttack = false;
+    HOOK(StopBeforeAttack, attack, attack, &stopBeforeAttack);
+    if (stopBeforeAttack) {
+        return;
+    }
     HOOK(OnBeforeAttack, attack, attack);
 
     for (auto& kv : attack->GetTargets()) {

src/Battling/ScriptHandling/Script.hpp

@@ -30,7 +30,7 @@ namespace CreatureLib::Battling {
         virtual void ChangeAttack(AttackTurnChoice* choice, std::string* outAttack){};
         virtual void PreventAttack(ExecutingAttack* attack, bool* outResult){};
         virtual void FailAttack(ExecutingAttack* attack, bool* outFailed){};
-        virtual void StopBeforeAttack(ExecutingAttack* attack){};
+        virtual void StopBeforeAttack(ExecutingAttack* attack, bool* outResult){};
         virtual void OnBeforeAttack(ExecutingAttack* attack){};
 
         virtual void FailIncomingAttack(ExecutingAttack* attack, Creature* target, bool* outResult){};