[Bots] Cleanup Bot Spell Functions, reduce reliance on NPC Functions/Attributes (#2495)

* [Bots] Initial Cleanup of Functions, moved Bot Casting out of mob_ai.cpp

* Moved Bots off NPC AI_Spells Struct, and AI_Spells private attribute.

* Formatting Fixes, fixed LogAI entries, Added LogAIModerate Alias

* Add Constants.

* Added Bot DB Struct, fixed some potential casting issues

* Formatting

* Formatting

zone/zone.cpp

@@ -1874,7 +1874,8 @@ bool Zone::Depop(bool StartSpawnTimer) {
 
 	// clear spell cache
 	database.ClearNPCSpells();
-
+	database.ClearBotSpells();
+	
 	zone->spawn_group_list.ReloadSpawnGroups();
 
 	return true;