Adds event regions to GameMaster events (#8334)

* Configures gm events to be selectable by "region"

* Configures event regions for existing events

* Configures event selection to filter by region

code/modules/gamemaster/event2/events/security/carp_migration.dm

@@ -5,6 +5,7 @@
 	chaos = 30
 	chaotic_threshold = EVENT_CHAOS_THRESHOLD_MEDIUM_IMPACT
 	event_type = /datum/event2/event/mob_spawning/carp_migration
+	regions = list(EVENT_REGION_SPACESTATION, EVENT_REGION_DEEPSPACE)
 
 /datum/event2/meta/carp_migration/get_weight()
 	return 10 + (metric.count_people_in_department(DEPARTMENT_SECURITY) * 20) + (metric.count_all_space_mobs() * 40)

code/modules/gamemaster/event2/events/security/drill_announcement.dm

@@ -3,6 +3,7 @@
 	departments = list(DEPARTMENT_SECURITY, DEPARTMENT_EVERYONE)
 	chaotic_threshold = EVENT_CHAOS_THRESHOLD_HIGH_IMPACT // Don't run if we just got hit by meteors.
 	event_type = /datum/event2/event/security_drill
+	regions = list(EVENT_REGION_PLAYER_MAIN_AREA)
 
 /datum/event2/meta/security_drill/get_weight()
 	var/sec = metric.count_people_in_department(DEPARTMENT_SECURITY)

code/modules/gamemaster/event2/events/security/prison_break.dm

@@ -10,6 +10,7 @@
 	// the prison area.
 	var/list/relevant_areas = list()
 	var/list/irrelevant_areas = list()
+	regions = list(EVENT_REGION_PLAYER_MAIN_AREA)
 
 /datum/event2/meta/prison_break/get_weight()
 	// First, don't do this if nobody can fix the doors.

code/modules/gamemaster/event2/events/security/rogue_drones.dm

@@ -4,6 +4,7 @@
 	chaos = 40
 	chaotic_threshold = EVENT_CHAOS_THRESHOLD_MEDIUM_IMPACT
 	event_type = /datum/event2/event/mob_spawning/rogue_drones
+	regions = list(EVENT_REGION_SPACESTATION, EVENT_REGION_DEEPSPACE)
 
 /datum/event2/meta/rogue_drones/get_weight()
 	. = 10 // Start with a base weight, since this event does provide some value even if no sec is around.

code/modules/gamemaster/event2/events/security/security_advisement.dm

@@ -3,6 +3,7 @@
 	departments = list(DEPARTMENT_SECURITY, DEPARTMENT_EVERYONE)
 	chaotic_threshold = EVENT_CHAOS_THRESHOLD_HIGH_IMPACT // So this won't get called in the middle of a crisis.
 	event_type = /datum/event2/event/security_screening
+	regions = list(EVENT_REGION_UNIVERSAL)
 
 /datum/event2/meta/security_screening/get_weight()
 	. = 0

code/modules/gamemaster/event2/events/security/spider_infestation.dm

@@ -5,6 +5,7 @@
 	chaos = 30
 	chaotic_threshold = EVENT_CHAOS_THRESHOLD_MEDIUM_IMPACT
 	event_type = /datum/event2/event/spider_infestation
+	regions = list(EVENT_REGION_PLAYER_MAIN_AREA)
 
 /datum/event2/meta/spider_infestation/weak
 	name = "weak spider infestation"

code/modules/gamemaster/event2/events/security/stowaway.dm

@@ -6,6 +6,7 @@
 	chaotic_threshold = EVENT_CHAOS_THRESHOLD_LOW_IMPACT
 	event_type = /datum/event2/event/ghost_pod_spawner/stowaway
 	var/safe_for_extended = FALSE
+	regions = list(EVENT_REGION_PLAYER_MAIN_AREA)
 
 /datum/event2/meta/stowaway/normal
 	name = "stowaway - normal"

code/modules/gamemaster/event2/events/security/surprise_carp.dm

@@ -6,6 +6,7 @@
 	chaos = 20
 	chaotic_threshold = EVENT_CHAOS_THRESHOLD_MEDIUM_IMPACT
 	event_type = /datum/event2/event/surprise_carp
+	regions = list(EVENT_REGION_SPACESTATION, EVENT_REGION_DEEPSPACE)
 
 /datum/event2/meta/surprise_carp/get_weight()
 	return metric.count_all_space_mobs() * 50

code/modules/gamemaster/event2/events/security/swarm_boarder.dm

@@ -7,6 +7,7 @@
 	chaotic_threshold = EVENT_CHAOS_THRESHOLD_HIGH_IMPACT
 	enabled = FALSE // Turns out they are in fact grossly OP.
 	var/safe_for_extended = FALSE
+	regions = list(EVENT_REGION_SPACESTATION, EVENT_REGION_DEEPSPACE)
 
 /datum/event2/meta/swarm_boarder/get_weight()
 	if(istype(ticker.mode, /datum/game_mode/extended) && !safe_for_extended)