Adds pickaxes to the autolathe. (#3037)

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Title.

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## Why It's Good For The Game
What if you loose yours?? Huh??
Why it's not a thing yet is the real mystery.
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## Changelog

:cl:
add: Pickaxe was added to the autolathe.
/:cl:

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code/modules/research/designs/autolathe_designs.dm

@@ -491,6 +491,14 @@
 	build_path = /obj/item/shovel
 	category = list("initial","Misc", "Tool Designs")
 
+/datum/design/pickaxe
+	name = "Pickaxe"
+	id = "pickaxe"
+	build_type = AUTOLATHE | PROTOLATHE
+	materials = list(/datum/material/iron = 1000)
+	build_path = /obj/item/pickaxe
+	category = list("initial","Tools", "Tool Designs")
+
 /datum/design/spade
 	name = "Spade"
 	id = "spade"