AllergyPen and autoinjector costs (#17545)

* AllergyPen and autoinjector costs

Added a new AllergyPen autoinjector, available via the loadout (1 point) and medical vendors. Basically the same as the inaprovaline injectors that everyone starts with anyway, but with a new sprite and text to theme them around characters with allergies.

Reduced the cost of large autoinjectors in the injector maker from 1500 to 300. The small ones cost 30 already, and the large ones are definitely worth way more but getting more than one per sheet of plastic would be really nice! Hopefully will make the injector maker more used.

* Update injector_maker.dm

code/modules/reagents/machinery/injector_maker.dm

@@ -25,9 +25,9 @@
 
 	var/count_plastic = 0 //Given in "units", not sheets
 	var/value_plastic = 2000 //1 sheet translates to 2000 units
-	var/cost_plastic_small = 30
-	var/cost_plastic_large = 1500
-	var/capacity_plastic = 60000 // cost_plastic_large * 40
+	var/cost_plastic_small = 25
+	var/cost_plastic_large = 250
+	var/capacity_plastic = 60000 // 30 sheets of plastic
 
 
 /obj/machinery/injector_maker/Initialize(mapload)

code/modules/reagents/reagent_containers/hypospray.dm

@@ -211,6 +211,12 @@
 	desc = "A rapid and safe way to administer small amounts of drugs by untrained or trained personnel. This one excels at treating genetic damage."
 	filled_reagents = list(REAGENT_ID_REZADONE = 5)
 
+/obj/item/reagent_containers/hypospray/autoinjector/allergen
+	name = "AllergyPen"
+	desc = "An autoinjector designed for use during an allergic reaction or anaphylaxis. The user should immediately seek medical support after use, for additional monitoring and aid."
+	icon_state = "allergy"
+	item_state = "allergy"
+
 // These have a 15u capacity, somewhat higher tech level, and generally more useful chems, but are otherwise the same as the regular autoinjectors.
 /obj/item/reagent_containers/hypospray/autoinjector/biginjector
 	name = "empty hypo"