Adds new script hook to prevent incoming critical hits

src/Battling/Library/MiscLibrary.cpp

@@ -8,6 +8,12 @@
 
 bool PkmnLib::Battling::MiscLibrary::IsCritical(CreatureLib::Battling::ExecutingAttack* attack,
                                                 CreatureLib::Battling::Creature* target, uint8_t hit) const {
+    bool preventCrit = false;
+    PKMN_HOOK(PreventIncomingCritical, target, attack, target, hit, &preventCrit);
+    if (preventCrit) {
+        return false;
+    }
+
     uint8_t critStage = 0;
     PKMN_HOOK(ModifyCriticalStage, attack, attack, target, hit, &critStage);
     Ensure(target->GetBattle().HasValue());

src/Battling/PkmnScript.hpp

@@ -16,6 +16,8 @@ namespace PkmnLib::Battling {
     public:
         PkmnScript(const ArbUt::OptionalBorrowedPtr<void>& owner) : CreatureLib::Battling::BattleScript(owner) {}
 
+        virtual void PreventIncomingCritical(CreatureLib::Battling::ExecutingAttack* attack,
+                                         CreatureLib::Battling::Creature* target, uint8_t hit, bool* preventCrit){};
         virtual void ModifyCriticalStage(CreatureLib::Battling::ExecutingAttack* attack,
                                          CreatureLib::Battling::Creature* target, uint8_t hit, uint8_t* critStage){};
         virtual void OverrideCriticalModifier(CreatureLib::Battling::ExecutingAttack* attack,