Adds mini-eguns to the cargo market. (#2752)

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## About The Pull Request

As the name says.

## Why It's Good For The Game

Energy-based option for a sidearm. 
## Changelog

:cl:
add: Mini Energy Guns can now be bought at the outpost.
/:cl:

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code/modules/cargo/packs/gun.dm

@@ -65,6 +65,14 @@
 					/obj/item/gun/energy/laser)
 	crate_name = "laser crate"
 
+/datum/supply_pack/gun/laser
+	name = "Mini Energy Gun Crate"
+	desc = "Contains two small, versatile energy guns, capable of firing both nonlethal and lethal blasts, but with a limited power cell."
+	cost = 1500
+	contains = list(/obj/item/gun/energy/e_gun/mini,
+					/obj/item/gun/energy/e_gun/mini)
+	crate_name = "laser crate"
+
 /datum/supply_pack/gun/energy
 	name = "Energy Guns Crate"
 	desc = "Contains two versatile energy guns, capable of firing both nonlethal and lethal blasts of light."