[Expeditions] Refactor expedition requests (#1301)

Move ExpeditionLockoutTimer to common

This simplifies expedition request conflict checks and uses repository
for the queries instead of processing the query result directly.

zone/lua_client.cpp

@@ -5,7 +5,6 @@
 
 #include "client.h"
 #include "dynamic_zone.h"
-#include "expedition_lockout_timer.h"
 #include "expedition_request.h"
 #include "lua_client.h"
 #include "lua_expedition.h"
@@ -16,6 +15,7 @@
 #include "lua_group.h"
 #include "lua_raid.h"
 #include "lua_packet.h"
+#include "../common/expedition_lockout_timer.h"
 
 struct InventoryWhere { };