Adds new synthetic cosmetics (#4026)

# About the pull request

Added a stethoscope to the synthetic point vendor (since it has some
utility, even if tiny) and 3 arm band types to the snowflake vendor.

# Explain why it's good for the game

Keeps you from having to harass medical for a stethoscope, and gives
more options for RP'ing a more department-focused character.

# Testing Photographs and Procedure

Tested using a private server, verifying the items show up properly and
cost what they should.

# Changelog

:cl:
add: Added a stethoscope, red, yellow, and white/green armband to
synthetic vendors
/:cl:

---------

Co-authored-by: BeagleGaming1 <[email protected]>

code/game/machinery/vending/vendor_types/crew/synthetic.dm

@@ -75,7 +75,8 @@
 		list("Motion Detector", 5, /obj/item/device/motiondetector, null, VENDOR_ITEM_REGULAR),
 		list("Space Cleaner", 2, /obj/item/reagent_container/spray/cleaner, null, VENDOR_ITEM_REGULAR),
 		list("Whistle", 5, /obj/item/device/whistle, null, VENDOR_ITEM_REGULAR),
-		list("Machete Scabbard (Full)", 2, /obj/item/storage/large_holster/machete/full, null, VENDOR_ITEM_REGULAR)
+		list("Machete Scabbard (Full)", 2, /obj/item/storage/large_holster/machete/full, null, VENDOR_ITEM_REGULAR),
+		list("Stethoscope", 2, /obj/item/clothing/accessory/stethoscope, null, VENDOR_ITEM_REGULAR)
 
 	)
 
@@ -263,6 +264,12 @@ GLOBAL_LIST_INIT(cm_vending_clothing_synth_snowflake, list(
 	list("USCM RTO Pack", 12, /obj/item/storage/backpack/marine/satchel/rto, null, VENDOR_ITEM_REGULAR),
 	list("USCM Welderpack", 12, /obj/item/storage/backpack/marine/engineerpack, null, VENDOR_ITEM_REGULAR),
 	list("USCM Weldersatchel", 12, /obj/item/storage/backpack/marine/engineerpack/satchel, null, VENDOR_ITEM_REGULAR),
+
+	list("OTHER", 0, null, null, null),
+	list("Red Armband", 6, /obj/item/clothing/accessory/armband, null, VENDOR_ITEM_REGULAR),
+	list("Yellow Armband", 6, /obj/item/clothing/accessory/armband/engine, null, VENDOR_ITEM_REGULAR),
+	list("Green Armband", 6, /obj/item/clothing/accessory/armband/medgreen, null, VENDOR_ITEM_REGULAR),
+
 ))
 
 /obj/structure/machinery/cm_vending/clothing/synth/snowflake