Refactor girders and wall construction (#94364)

## About The Pull Request

This PR refactors wall construction on girders, wooden barricades and
metal foam to use a centralized element, which listens to item
interaction signals and attempts to make any available wall recipe.

This change is an atomized prerequisite to my blueprinting system, since
that system requires a sane way to dynamically change the speed at which
walls are built.

This PR will later be expanded to refactor girder construction steps in
general.

I also added `proc/valid_typesof(base_type)` as a side effect of my
previous attempts at refactoring this stuff. There's now what amounts to
a code comment easter egg in the same file, because DM is wacko and
you're going to get cursed now too. :)
## Why It's Good For The Game

The old system had ~20 bespoke yet highly similar wall construction
steps. Some of the wall recipes were also concatenated from a string on
the used stack type. To put it bluntly, the code was fucking horrible.

Same thing goes for the rest of the girder construction steps, they were
all bespoke.
## Changelog
🆑
refactor: Refactored girders and wall construction. Report any bugs.
tweak: Some niche wall types might have their wall delay changed by like
2 seconds. This doesn't affect normal walls, reinforced walls,
falsewalls or any other important wall types.
/🆑

code/game/objects/effects/effect_system/fluid_spread/effects_foam.dm

@@ -324,6 +324,7 @@
 /obj/structure/foamedmetal/Initialize(mapload)
 	. = ..()
 	air_update_turf(TRUE, TRUE)
+	AddElement(/datum/element/uses_girder_wall_recipes)
 
 /obj/structure/foamedmetal/Destroy()
 	air_update_turf(TRUE, FALSE)
@@ -349,37 +350,6 @@
 	to_chat(user, span_warning("You hit [src] but bounce off it!"))
 	playsound(src.loc, 'sound/items/weapons/tap.ogg', 100, TRUE)
 
-/obj/structure/foamedmetal/attackby(obj/item/W, mob/user, list/modifiers, list/attack_modifiers)
-	///A speed modifier for how fast the wall is build
-	var/platingmodifier = 1
-	if(HAS_TRAIT(user, TRAIT_QUICK_BUILD))
-		platingmodifier = 0.7
-		if(next_beep <= world.time)
-			next_beep = world.time + 1 SECONDS
-			playsound(src, 'sound/machines/clockcult/integration_cog_install.ogg', 50, TRUE)
-	add_fingerprint(user)
-
-	if(!istype(W, /obj/item/stack/sheet))
-		return ..()
-
-	var/obj/item/stack/sheet/sheet_for_plating = W
-	if(istype(sheet_for_plating, /obj/item/stack/sheet/iron))
-		if(sheet_for_plating.get_amount() < 2)
-			to_chat(user, span_warning("You need two sheets of iron to finish a wall on [src]!"))
-			return
-		to_chat(user, span_notice("You start adding plating to the foam structure..."))
-		if (do_after(user, 40 * platingmodifier, target = src))
-			if(!sheet_for_plating.use(2))
-				return
-			to_chat(user, span_notice("You add the plating."))
-			var/turf/T = get_turf(src)
-			T.place_on_top(/turf/closed/wall/metal_foam_base)
-			transfer_fingerprints_to(T)
-			qdel(src)
-		return
-
-	add_hiddenprint(user)
-
 /// A metal foam variant which produces slightly sturdier walls.
 /obj/effect/particle_effect/fluid/foam/metal/iron
 	name = "iron foam"