Offstation Spawns for Visitors, on Nebula (#6921)

## About The Pull Request

This PR adds visitors spawns on Nebula. Meaning that people outside NT
can now spawn outside a NT station.

This PR adds 4 new alternative name for outside spawning Visitors :
-> Visitors, (the normal)
-> Contractor
-> Freelancer
-> Frontier Colonist
-> Tourist

Additional : Makes solar bigger.

Now, with visitors on nebula, they can just RP there, use one of the 5
free to use shuttle to wander off in space. In the eventuality that all
shuttle are taken, not to fret !
- Visitor can make a call to order a NT pilot to get them ! (If one is
on station) via public holopads or fax.
- Traders can bring them with their shuttle (the Udang is a passenger
shuttle they can use)

NOTE : For now, no shuttle have been coded to work with the Endeavour.
Only the Beruang.

## Why It's Good For The Game

Off station spawn have been requested for a long time.

code/modules/lore_hardcoded/faction.dm

@@ -102,6 +102,7 @@
 		/datum/role/job/station/janitor::id,
 		/datum/role/job/station/librarian::id,
 		/datum/role/job/station/mime::id,
+		/datum/role/job/station/outsider::id,
 		// med staff - paramedic only
 		/datum/role/job/station/paramedic::id,
 		// engineering staff - engi and atmos tech
@@ -150,6 +151,8 @@
 		/datum/role/job/station/scientist::id,
 		// not their specialty
 		/datum/role/job/station/chief_medical_officer::id,
+		//Outside NT
+		/datum/role/job/station/outsider::id,
 	)
 
 /datum/lore/character_background/faction/oculum
@@ -174,6 +177,7 @@
 		/datum/role/job/station/janitor::id,
 		/datum/role/job/station/librarian::id,
 		/datum/role/job/station/mime::id,
+		/datum/role/job/station/outsider::id,
 		// off duty
 		/datum/role/job/station/off_duty/civilian::id,
 	)
@@ -211,4 +215,6 @@
 		/datum/role/job/station/scientist::id,
 		// not their specialty
 		/datum/role/job/station/chief_engineer::id,
+		//Outside NT
+		/datum/role/job/station/outsider::id,
 	)