Allow decompilation of shrapnel and cardboard tubes (#28306)

* Allow decompilation of shrapnel, cardboard tubes, ammo boxes and magazines

* Do not allow decompilation of magazines

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Co-authored-by: Arthri <41360489+a@users.noreply.github.com>

code/game/objects/items/weapons/grenades/frag.dm

@@ -73,4 +73,8 @@
 	icon_state = pick("shrapnel1", "shrapnel2", "shrapnel3")
 	scatter_atom()
 
+/obj/item/shrapnel/decompile_act(obj/item/matter_decompiler/C, mob/user)
+	qdel(src)
+	return TRUE
+
 #undef DEFAULT_SHRAPNEL_RANGE

code/game/objects/items/weapons/misc_items.dm

@@ -121,6 +121,10 @@
 	throw_speed = 4
 	throw_range = 5
 
+/obj/item/c_tube/decompile_act(obj/item/matter_decompiler/C, mob/user)
+	qdel(src)
+	return TRUE
+
 
 
 /obj/item/fan