[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.

common/CMakeLists.txt

@@ -31,6 +31,7 @@ SET(common_sources
 	eq_stream_proxy.cpp
 	eqtime.cpp
 	event_sub.cpp
+	expedition_lockout_timer.cpp
 	extprofile.cpp
 	faction.cpp
 	file_util.cpp
@@ -488,6 +489,7 @@ SET(common_headers
 	eqtime.h
 	errmsg.h
 	event_sub.h
+	expedition_lockout_timer.h
 	extprofile.h
 	faction.h
 	file_util.h