Adds a new Security jumpsuit

This adds a new Security jumpsuit that looks a little less bad than the basic one, edited from one Polaris added a while back. It also adds it to loadout selection and to the uniform vendor. My first contribution to ss13 and my first spritework!

code/modules/client/preference_setup/loadout/loadout_uniform_vr.dm

@@ -306,3 +306,9 @@ Talon jumpsuit
 		var/obj/item/clothing/under/color/fjumpsuit/jumpsuit = jumpsuit_style
 		jumpsuits[initial(jumpsuit.name)] = jumpsuit
 	gear_tweaks += new/datum/gear_tweak/path(sortAssoc(jumpsuits))
+
+//Modernized Sec Jumpsuit
+/datum/gear/uniform/modernsec
+    display_name = "undersuit, security, modernized (Security)"
+    allowed_roles = list("Head of Security", "Warden", "Detective", "Security Officer")
+    path = /obj/item/clothing/under/rank/security/modern

code/modules/clothing/under/jobs/security.dm

@@ -26,6 +26,17 @@
 	siemens_coefficient = 0.9
 	rolled_sleeves = 0
 
+/obj/item/clothing/under/rank/security/modern
+	name = "modernized security officer's jumpsuit"
+	desc = "A recent redesign of the classic Security jumpsuit, featuring sturdy materials, joint padding, one giant zipper, and tight-fitting synthleather."
+	icon_state = "securitymodern"
+	item_state = "securitymodern"
+	item_state_slots = list(slot_r_hand_str = "red", slot_l_hand_str = "red")
+	rolled_sleeves = -1
+	worn_state = "securitymodern"
+	icon = 'icons/inventory/uniform/item.dmi'
+	default_worn_icon = 'icons/inventory/uniform/mob_vr.dmi'
+
 /obj/item/clothing/under/rank/security/turtleneck
 	name = "security turtleneck"
 	desc = "It's a stylish turtleneck made of a robust nanoweave. Nobody said the Law couldn't be fashionable."

code/modules/economy/vending_machines.dm

@@ -1217,6 +1217,7 @@
 		/obj/item/clothing/under/rank/security = 5,
 		/obj/item/clothing/under/rank/security2 = 5,
 		/obj/item/clothing/under/rank/security/turtleneck = 5,
+		/obj/item/clothing/under/rank/security/modern = 5,
 		/obj/item/clothing/under/rank/security/skirt = 5,
 		/obj/item/clothing/shoes/boots/jackboots = 5,
 		/obj/item/clothing/head/soft/sec = 5,