Adds Flares To Outpost (#3393)

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## About The Pull Request
You can now buy flares at the outpost
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## Why It's Good For The Game
flares r cool
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## Changelog

:cl:
add: You can now buy flares at the outpost
/:cl:

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code/modules/cargo/packs/exploration.dm

@@ -129,3 +129,14 @@
 	contains = list(
 		/obj/item/gps
 	)
+
+/datum/supply_pack/exploration/flares
+	name = "Flare Supply Pack"
+	desc = "Contains 4 boxes of flares (28 total)! Great for lighting things up."
+	cost = 100
+	contains = list(
+		/obj/item/storage/box/flares,
+		/obj/item/storage/box/flares,
+		/obj/item/storage/box/flares,
+		/obj/item/storage/box/flares,
+	)