Added base BG methods and hooks

This has only been tested on Mangos Zero and will definitely need tweaking on Trinity

More methods will be added SHORTLY

HookMgr.h

@@ -24,6 +24,7 @@ namespace HookMgr
         REGTYPE_ITEM,
         REGTYPE_ITEM_GOSSIP,
         REGTYPE_PLAYER_GOSSIP,
+        REGTYPE_BG,
         REGTYPE_COUNT
     };
 
@@ -61,6 +62,7 @@ namespace HookMgr
 
         // Eluna
         ELUNA_EVENT_ON_LUA_STATE_CLOSE          =     16,       // (event)
+        ELUNA_EVENT_ON_LUA_STATE_OPEN           =     33,       // (event) - Possibly change hook ID for increments? Not implemented on TC/Cmangos
 
         // Map
         MAP_EVENT_ON_CREATE                     =     17,       // (event, map)
@@ -88,8 +90,6 @@ namespace HookMgr
         
         WORLD_EVENT_ON_DELETE_CREATURE          =     31,       // (event, creature)
         WORLD_EVENT_ON_DELETE_GAMEOBJECT        =     32,       // (event, gameobject)
-        
-        ELUNA_EVENT_ON_LUA_STATE_OPEN           =     33,       // (event) - Possibly change hook ID for increments? Not implemented on TC/Cmangos
 
         SERVER_EVENT_COUNT
     };
@@ -274,5 +274,13 @@ namespace HookMgr
         GOSSIP_EVENT_ON_SELECT                          = 2,    // (event, player, object, sender, intid, code, menu_id) - Object is the Creature/GameObject/Item/Player, menu_id is only for player gossip
         GOSSIP_EVENT_COUNT
     };
+
+    // RegisterBGEvent(map_id/entry, EventId, function)
+    enum BGEvents
+    {
+        BG_EVENT_ON_START                               = 1,    // (event, bg, bgId, instanceId) - Needs to be added to TC
+        BG_EVENT_ON_END                                 = 2,    // (event, ???) - Needs to be added to TC
+        BG_EVENT_COUNT
+    };
 };
 #endif