Reset instance ID via existing cmd refresh=raid for alt bots (#2422)

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## Pull Request Description
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Alt bots can now use refresh=raid cmd if cfg is set to 1.
`AiPlayerbot.ResetInstanceIdForAltBots = 1`


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Add alt bot, use .playerbots bot refresh=raid and it should say ok after
reseting instance.


## Impact Assessment
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- Does this change increase per-bot/per-tick processing or risk scaling
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    - - [ ] Minimal impact (**explain below**)
    - - [ ] Moderate impact (**explain below**)



- Does this change modify default bot behavior?
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    - - [x] Yes (**explain why**)
Alt bots will now reset instance ID if cfg is set to 1.


- Does this change add new decision branches or increase maintenance
complexity?
    - - [ ] No
    - - [x] Yes (**explain below**)
It will check if cfg is set to 1 to enable alt bots to reset instance
id.


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## Final Checklist

- - [x] Stability is not compromised.
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---------

Co-authored-by: Keleborn <22352763+Celandriel@users.noreply.github.com>

conf/playerbots.conf.dist

@@ -187,6 +187,13 @@ AiPlayerbot.SelfBotLevel = 1
 # Default: 0 (non-GM player can use any intialization commands)
 AiPlayerbot.AutoInitOnly = 0
 
+# Allow .bot refresh=raid to unbind instances on player-created alt
+# bots (non-addclass bots). When 0, refresh=raid is denied on alts
+# with "non-addclass bot" error. UnbindInstance is DB-light, no lag
+# risk from enabling this.
+# Default: 0
+AiPlayerbot.ResetInstanceIdForAltBots = 0
+
 # The upper limit ratio of bot equipment level for init=auto
 # Default: 1.0 (same with the player)
 AiPlayerbot.AutoInitEquipLevelLimitRatio = 1.0

src/Bot/PlayerbotMgr.cpp

@@ -732,7 +732,10 @@ std::string const PlayerbotHolder::ProcessBotCommand(std::string const cmd, Obje
     bool addClassBot = sRandomPlayerbotMgr.IsAddclassBot(guid.GetCounter());
 
     if (!addClassBot)
-        return "ERROR: You can not use this command on non-addclass bot.";
+    {
+        if (!(cmd == "refresh=raid" && sPlayerbotAIConfig.resetInstanceIdForAltBots))
+            return "ERROR: You can only use this command on addclass bots.";
+    }
 
     if (!admin)
     {

src/PlayerbotAIConfig.cpp

@@ -593,6 +593,7 @@ bool PlayerbotAIConfig::Initialize()
     reviveBotWhenSummoned = sConfigMgr->GetOption<int32>("AiPlayerbot.ReviveBotWhenSummoned", 1);
     botRepairWhenSummon = sConfigMgr->GetOption<bool>("AiPlayerbot.BotRepairWhenSummon", true);
     autoInitOnly = sConfigMgr->GetOption<bool>("AiPlayerbot.AutoInitOnly", false);
+    resetInstanceIdForAltBots = sConfigMgr->GetOption<bool>("AiPlayerbot.ResetInstanceIdForAltBots", false);
     autoInitEquipLevelLimitRatio = sConfigMgr->GetOption<float>("AiPlayerbot.AutoInitEquipLevelLimitRatio", 1.0);
 
     maxAddedBots = sConfigMgr->GetOption<int32>("AiPlayerbot.MaxAddedBots", 40);

src/PlayerbotAIConfig.h

@@ -406,6 +406,7 @@ public:
     int reviveBotWhenSummoned;
     bool botRepairWhenSummon;
     bool autoInitOnly;
+    bool resetInstanceIdForAltBots;
     float autoInitEquipLevelLimitRatio;
     int32 maxAddedBots;
     int32 addClassCommand;