Scripts/Commands: New utility command: .list spawnpoints.

Port From (https://github.com/TrinityCore/TrinityCore/commit/703910d71baa3182c956494465cdd335f5de1d3d)

sql/updates/auth/master/2017_08_01_00_auth.sql

@@ -0,0 +1,8 @@
+-- 
+DELETE FROM `rbac_permissions` WHERE `id`=866;
+INSERT INTO `rbac_permissions` (`id`,`name`) VALUES
+(866, 'Command: list spawnpoints');
+
+DELETE FROM `rbac_linked_permissions` WHERE `linkedId`=866;
+INSERT INTO `rbac_linked_permissions` (`id`,`linkedId`) VALUES
+(196,866);