First (of probably several) commits to add Foam Force toy guns. Adds the new guns and crossbow, removes the old crossbow, and makes these new guns available to cargo.

code/modules/research/designs/autolathe_designs.dm

@@ -386,6 +386,14 @@
 	build_path = /obj/item/device/assembly/prox_sensor
 	category = list("initial", "Misc")
 
+/datum/design/foam_dart
+	name = "Box of Foam Darts"
+	id = "foam_dart"
+	build_type = AUTOLATHE
+	materials = list("$metal" = 500)
+	build_path = /obj/item/ammo_box/foambox
+	category = list("initial", "Misc")
+
 //hacked autolathe recipes
 /datum/design/flamethrower
 	name = "Flamethrower"