feat(Core/Unit): New helper HasActivePowerType and script hook OnPlayerHasActivePowerType (#18293)

* Create HasActivePower for script intercept

* Replace relevant player-related getPowerType() comparators with HasActivePowerType

* Change OnPlayerHasActivePowerType to regular bool instead of optional

---------

Co-authored-by: NathanHandley <nathanhandley@protonmail.com>

src/server/game/Scripting/ScriptDefines/PlayerScript.h

@@ -324,6 +324,8 @@ public:
 
     virtual void OnGetMaxSkillValue(Player* /*player*/, uint32 /*skill*/, int32& /*result*/, bool /*IsPure*/) { }
 
+    [[nodiscard]] virtual bool OnPlayerHasActivePowerType(Player const* /*player*/, Powers /*power*/) { return false; }
+
     /**
      * @brief This hook called before gathering skill gain is applied to the character.
      *