fix(DB/Quest): Into the Breach Quest start/end (#14092)

Create addquest.sql

data/sql/updates/pending_db_world/addquest.sql

@@ -0,0 +1,8 @@
+-- Starter
+DELETE FROM `creature_queststarter` WHERE (`quest` = 10259) AND (`id` IN (19942));
+INSERT INTO `creature_queststarter` (`id`, `quest`) VALUES
+(19942, 10259);
+-- Ender
+DELETE FROM `creature_questender` WHERE (`quest` = 10259) AND (`id` IN (19942));
+INSERT INTO `creature_questender` (`id`, `quest`) VALUES
+(19942, 10259);