Core/SAI: Implement SMART_ACTION_SET_HOME_POS (101)

No parameters; allowed targets: self and position

Closes #7689

src/server/game/AI/SmartScripts/SmartScriptMgr.cpp

@@ -904,6 +904,7 @@ bool SmartAIMgr::IsEventValid(SmartScriptHolder& e)
         case SMART_ACTION_SEND_GOSSIP_MENU:
         case SMART_ACTION_GO_SET_LOOT_STATE:
         case SMART_ACTION_SEND_TARGET_TO_TARGET:
+        case SMART_ACTION_SET_HOME_POS:
             break;
         default:
             sLog->outError(LOG_FILTER_SQL, "SmartAIMgr: Not handled action_type(%u), event_type(%u), Entry %d SourceType %u Event %u, skipped.", e.GetActionType(), e.GetEventType(), e.entryOrGuid, e.GetScriptType(), e.event_id);