Paladin buff logic: Sanctuary+Kings synergy, role-aware targeting, safer Greater buffs (#1603)

* Paladin buff logic: Sanctuary+Kings synergy, role-aware targeting, safer Greater buffs

* Update PaladinActions.cpp

* Update PaladinActions.cpp

* All configs should be implement into PlayerbotAIConfig and sPlayerbotAIConfig used in code

* added: prayer of fortitude

* Magic number removed

* Update PaladinActions.cpp

* Update PaladinActions.cpp

* Update PaladinActions.cpp

* Update PaladinActions.cpp

* Update PaladinActions.cpp

* Add patch for solo paladin in group

* Correction review

* Update PaladinActions.cpp

* Add harcoded text to DB

src/strategy/actions/GenericBuffUtils.h

@@ -0,0 +1,64 @@
+/*
+ * Copyright (C) 2016+ AzerothCore <www.azerothcore.org>, released under GNU GPL v2 license, you may redistribute it
+ * and/or modify it under version 2 of the License, or (at your option), any later version.
+ */
+ 
+#pragma once
+
+#include <string>
+#include <functional>
+#include "Common.h"
+#include "Group.h"
+#include "Chat.h"
+#include "Language.h"
+
+class Player;
+class PlayerbotAI;
+
+namespace ai::buff
+{
+
+    // Build an aura qualifier "single + greater" to avoid double-buffing
+    std::string MakeAuraQualifierForBuff(std::string const& name);
+
+    // Returns the group spell name for a given single-target buff.
+    // If no group equivalent exists, returns "".
+    std::string GroupVariantFor(std::string const& name);
+
+    // Checks if the bot has the required reagents to cast a spell (by its spellId).
+    // Returns false if the spellId is invalid.
+    bool HasRequiredReagents(Player* bot, uint32 spellId);
+
+
+    // Applies the "switch to group buff" policy if: the bot is in a group of size x+,
+    // the group variant is known/useful, and reagents are available. Otherwise, returns baseName.
+    // If announceOnMissing == true and reagents are missing, calls the 'announce' callback
+    // (if provided) to notify the party/raid.
+    std::string UpgradeToGroupIfAppropriate(
+        Player* bot,
+        PlayerbotAI* botAI,
+        std::string const& baseName,
+        bool announceOnMissing = false,
+        std::function<void(std::string const&)> announce = {}
+    );
+}
+
+namespace ai::chat {
+    inline std::function<void(std::string const&)> MakeGroupAnnouncer(Player* me)
+    {
+        return [me](std::string const& msg)
+        {
+            if (Group* g = me->GetGroup())
+            {
+                WorldPacket data;
+                ChatMsg type = g->isRaidGroup() ? CHAT_MSG_RAID : CHAT_MSG_PARTY;
+                ChatHandler::BuildChatPacket(data, type, LANG_UNIVERSAL, me, /*receiver=*/nullptr, msg.c_str());
+                g->BroadcastPacket(&data, true, -1, me->GetGUID());
+            }
+            else
+            {
+                me->Say(msg, LANG_UNIVERSAL);
+            }
+        };
+    }
+}