Adds a new Lavaland Ruin, the Elephant Graveyard (#47325)

* Initial Commit, Features the Map, Map specific files, changes to a metric ton of icons, etc.

* Fixes merge conflict, actually adds the map

* Spelling is hard Part 1

* Alright, steps are bad. Got it.

* Clean slate, please pretend to compile

* dme issue

* Fixes it for lavaland elites PR

* Removes the last dirty step_x, removes duplicate file, makes treavor happy

* Fixes some newline issues.

* Fixes some types, spawns skeletons in select graves since mob_spawns kept shoving them outside.

* Makes bone statues and shovel actually craftable, cleans up some comments.

* Properly defines muddy paper, updates map, fixes a few more typos.

* Prevents some future turf atmos issues, finally touched up the two skull sprites.

* Refactors strong mineral drops, cleans up some duplicate code, prevents washing hands with OIL

* I swear officer, i'm a native english speaker, fixes remains dropping correctly, un-nests my Ifs further.

* Oil well now covers target in oil when interacting with it.

* Refactors sink deconstruction a bit, oil wells can't be constructed with a wrench.

* Cleans up some atmos, and adds a return

* Adds subtype of remains for use in graves, move their spawn to src, not loc

* Moves around remains spawn, gets rid of untouched var

code/game/objects/structures/watercloset.dm

@@ -357,14 +357,17 @@
 
 /obj/structure/sink/deconstruct()
 	if(!(flags_1 & NODECONSTRUCT_1))
-		if(buildstacktype)
-			new buildstacktype(loc,buildstackamount)
-		else
-			for(var/i in custom_materials)
-				var/datum/material/M = i
-				new M.sheet_type(loc, FLOOR(custom_materials[M] / MINERAL_MATERIAL_AMOUNT, 1))
+		drop_materials()
 	..()
 
+/obj/structure/sink/proc/drop_materials()
+	if(buildstacktype)
+		new buildstacktype(loc,buildstackamount)
+	else
+		for(var/i in custom_materials)
+			var/datum/material/M = i
+			new M.sheet_type(loc, FLOOR(custom_materials[M] / MINERAL_MATERIAL_AMOUNT, 1))
+
 /obj/structure/sink/kitchen
 	name = "kitchen sink"
 	icon_state = "sink_alt"