Adds the organ cooler to the list of orderable items from operations (#21298)

Usually medical hand over their organ cooler to operations when there is
an organ bounty. The price might need some adjustment, but for now it
was mainly just set to be lower than the bounty, crate and handling fee
aside.

code/modules/cargo/items/medical.dm

@@ -745,3 +745,17 @@
 	container_type = "crate"
 	groupable = TRUE
 	spawn_amount = 1
+
+/singleton/cargo_item/organcooler
+	category = "medical"
+	name = "organ cooler"
+	supplier = "zeng_hu"
+	description = "A sealed, cooled container to keep organs from decaying."
+	price = 300
+	items = list(
+		/obj/item/storage/box/freezer/organcooler
+	)
+	access = ACCESS_MEDICAL
+	container_type = "crate"
+	groupable = TRUE
+	spawn_amount = 1