Improves barsigns and makes them buildable. (#24685)

* Improves barsigns and makes them buildable.

* Requested fixes.

* fingerprints and a parent call on attack_hand() (sure hope this doesn't break anything)

* More fixes.  (the change to barsigns.dmi is removing a bunch of almost-transparent pixels on the mead bay sign that shouldn't have been there)

* Even more fixes.

* Better code and sprite fixes.

* early returns

* better

* more

* switch

* qwertyuiop

* whoops

* maps are stupid

* mcramon sprites :o

* i hope mapmerge works this time

* i hope mapmerge works THIS time

* zrsxdctfhghfcdszzsxdgcfhv

---------

Co-authored-by: S34N <12197162+S34NW@users.noreply.github.com>

code/datums/spells/mimic.dm

@@ -26,7 +26,7 @@
 		/atom/movable/lighting_object,
 		/obj/machinery/dna_vault,
 		/obj/machinery/power/bluespace_tap,
-		/obj/structure/sign/barsign,
+		/obj/machinery/barsign,
 		/obj/machinery/atmospherics/unary/cryo_cell,
 		/obj/machinery/gravity_generator
 	)